Commit | Line | Data |
---|---|---|
2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
bfcd3a46 JP |
2 | /* |
3 | * net/core/devlink.c - Network physical/parent device Netlink interface | |
4 | * | |
5 | * Heavily inspired by net/wireless/ | |
6 | * Copyright (c) 2016 Mellanox Technologies. All rights reserved. | |
7 | * Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com> | |
bfcd3a46 JP |
8 | */ |
9 | ||
10 | #include <linux/kernel.h> | |
11 | #include <linux/module.h> | |
12 | #include <linux/types.h> | |
13 | #include <linux/slab.h> | |
14 | #include <linux/gfp.h> | |
15 | #include <linux/device.h> | |
16 | #include <linux/list.h> | |
17 | #include <linux/netdevice.h> | |
b8f97554 | 18 | #include <linux/spinlock.h> |
b587bdaf | 19 | #include <linux/refcount.h> |
136bf27f | 20 | #include <linux/workqueue.h> |
0f420b6c IS |
21 | #include <linux/u64_stats_sync.h> |
22 | #include <linux/timekeeping.h> | |
bfcd3a46 JP |
23 | #include <rdma/ib_verbs.h> |
24 | #include <net/netlink.h> | |
25 | #include <net/genetlink.h> | |
26 | #include <net/rtnetlink.h> | |
27 | #include <net/net_namespace.h> | |
28 | #include <net/sock.h> | |
29 | #include <net/devlink.h> | |
0f420b6c | 30 | #include <net/drop_monitor.h> |
e5224f0f JP |
31 | #define CREATE_TRACE_POINTS |
32 | #include <trace/events/devlink.h> | |
33 | ||
11770091 AS |
34 | static struct devlink_dpipe_field devlink_dpipe_fields_ethernet[] = { |
35 | { | |
12bdc5e1 | 36 | .name = "destination mac", |
11770091 AS |
37 | .id = DEVLINK_DPIPE_FIELD_ETHERNET_DST_MAC, |
38 | .bitwidth = 48, | |
39 | }, | |
40 | }; | |
41 | ||
42 | struct devlink_dpipe_header devlink_dpipe_header_ethernet = { | |
43 | .name = "ethernet", | |
44 | .id = DEVLINK_DPIPE_HEADER_ETHERNET, | |
45 | .fields = devlink_dpipe_fields_ethernet, | |
46 | .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ethernet), | |
47 | .global = true, | |
48 | }; | |
49 | EXPORT_SYMBOL(devlink_dpipe_header_ethernet); | |
50 | ||
3fb886ec AS |
51 | static struct devlink_dpipe_field devlink_dpipe_fields_ipv4[] = { |
52 | { | |
53 | .name = "destination ip", | |
54 | .id = DEVLINK_DPIPE_FIELD_IPV4_DST_IP, | |
55 | .bitwidth = 32, | |
56 | }, | |
57 | }; | |
58 | ||
59 | struct devlink_dpipe_header devlink_dpipe_header_ipv4 = { | |
60 | .name = "ipv4", | |
61 | .id = DEVLINK_DPIPE_HEADER_IPV4, | |
62 | .fields = devlink_dpipe_fields_ipv4, | |
63 | .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ipv4), | |
64 | .global = true, | |
65 | }; | |
66 | EXPORT_SYMBOL(devlink_dpipe_header_ipv4); | |
67 | ||
1797f5b3 AS |
68 | static struct devlink_dpipe_field devlink_dpipe_fields_ipv6[] = { |
69 | { | |
70 | .name = "destination ip", | |
71 | .id = DEVLINK_DPIPE_FIELD_IPV6_DST_IP, | |
72 | .bitwidth = 128, | |
73 | }, | |
74 | }; | |
75 | ||
76 | struct devlink_dpipe_header devlink_dpipe_header_ipv6 = { | |
77 | .name = "ipv6", | |
78 | .id = DEVLINK_DPIPE_HEADER_IPV6, | |
79 | .fields = devlink_dpipe_fields_ipv6, | |
80 | .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ipv6), | |
81 | .global = true, | |
82 | }; | |
83 | EXPORT_SYMBOL(devlink_dpipe_header_ipv6); | |
84 | ||
e5224f0f | 85 | EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwmsg); |
57186a5f | 86 | EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwerr); |
bfcd3a46 | 87 | |
a1e8ae90 PP |
88 | static const struct nla_policy devlink_function_nl_policy[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1] = { |
89 | [DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR] = { .type = NLA_BINARY }, | |
90 | }; | |
91 | ||
bfcd3a46 JP |
92 | static LIST_HEAD(devlink_list); |
93 | ||
94 | /* devlink_mutex | |
95 | * | |
96 | * An overall lock guarding every operation coming from userspace. | |
97 | * It also guards devlink devices list and it is taken when | |
98 | * driver registers/unregisters it. | |
99 | */ | |
100 | static DEFINE_MUTEX(devlink_mutex); | |
101 | ||
471f894f | 102 | struct net *devlink_net(const struct devlink *devlink) |
bfcd3a46 JP |
103 | { |
104 | return read_pnet(&devlink->_net); | |
105 | } | |
471f894f | 106 | EXPORT_SYMBOL_GPL(devlink_net); |
bfcd3a46 | 107 | |
8273fd84 | 108 | static void __devlink_net_set(struct devlink *devlink, struct net *net) |
bfcd3a46 JP |
109 | { |
110 | write_pnet(&devlink->_net, net); | |
111 | } | |
112 | ||
8273fd84 JP |
113 | void devlink_net_set(struct devlink *devlink, struct net *net) |
114 | { | |
115 | if (WARN_ON(devlink->registered)) | |
116 | return; | |
117 | __devlink_net_set(devlink, net); | |
118 | } | |
119 | EXPORT_SYMBOL_GPL(devlink_net_set); | |
120 | ||
bfcd3a46 JP |
121 | static struct devlink *devlink_get_from_attrs(struct net *net, |
122 | struct nlattr **attrs) | |
123 | { | |
124 | struct devlink *devlink; | |
125 | char *busname; | |
126 | char *devname; | |
127 | ||
128 | if (!attrs[DEVLINK_ATTR_BUS_NAME] || !attrs[DEVLINK_ATTR_DEV_NAME]) | |
129 | return ERR_PTR(-EINVAL); | |
130 | ||
131 | busname = nla_data(attrs[DEVLINK_ATTR_BUS_NAME]); | |
132 | devname = nla_data(attrs[DEVLINK_ATTR_DEV_NAME]); | |
133 | ||
dac7c08f PP |
134 | lockdep_assert_held(&devlink_mutex); |
135 | ||
bfcd3a46 JP |
136 | list_for_each_entry(devlink, &devlink_list, list) { |
137 | if (strcmp(devlink->dev->bus->name, busname) == 0 && | |
138 | strcmp(dev_name(devlink->dev), devname) == 0 && | |
139 | net_eq(devlink_net(devlink), net)) | |
140 | return devlink; | |
141 | } | |
142 | ||
143 | return ERR_PTR(-ENODEV); | |
144 | } | |
145 | ||
146 | static struct devlink *devlink_get_from_info(struct genl_info *info) | |
147 | { | |
148 | return devlink_get_from_attrs(genl_info_net(info), info->attrs); | |
149 | } | |
150 | ||
151 | static struct devlink_port *devlink_port_get_by_index(struct devlink *devlink, | |
c7282b50 | 152 | unsigned int port_index) |
bfcd3a46 JP |
153 | { |
154 | struct devlink_port *devlink_port; | |
155 | ||
156 | list_for_each_entry(devlink_port, &devlink->port_list, list) { | |
157 | if (devlink_port->index == port_index) | |
158 | return devlink_port; | |
159 | } | |
160 | return NULL; | |
161 | } | |
162 | ||
c7282b50 PP |
163 | static bool devlink_port_index_exists(struct devlink *devlink, |
164 | unsigned int port_index) | |
bfcd3a46 JP |
165 | { |
166 | return devlink_port_get_by_index(devlink, port_index); | |
167 | } | |
168 | ||
169 | static struct devlink_port *devlink_port_get_from_attrs(struct devlink *devlink, | |
170 | struct nlattr **attrs) | |
171 | { | |
172 | if (attrs[DEVLINK_ATTR_PORT_INDEX]) { | |
173 | u32 port_index = nla_get_u32(attrs[DEVLINK_ATTR_PORT_INDEX]); | |
174 | struct devlink_port *devlink_port; | |
175 | ||
176 | devlink_port = devlink_port_get_by_index(devlink, port_index); | |
177 | if (!devlink_port) | |
178 | return ERR_PTR(-ENODEV); | |
179 | return devlink_port; | |
180 | } | |
181 | return ERR_PTR(-EINVAL); | |
182 | } | |
183 | ||
184 | static struct devlink_port *devlink_port_get_from_info(struct devlink *devlink, | |
185 | struct genl_info *info) | |
186 | { | |
187 | return devlink_port_get_from_attrs(devlink, info->attrs); | |
188 | } | |
189 | ||
bf797471 JP |
190 | struct devlink_sb { |
191 | struct list_head list; | |
192 | unsigned int index; | |
193 | u32 size; | |
194 | u16 ingress_pools_count; | |
195 | u16 egress_pools_count; | |
196 | u16 ingress_tc_count; | |
197 | u16 egress_tc_count; | |
198 | }; | |
199 | ||
200 | static u16 devlink_sb_pool_count(struct devlink_sb *devlink_sb) | |
201 | { | |
202 | return devlink_sb->ingress_pools_count + devlink_sb->egress_pools_count; | |
203 | } | |
204 | ||
205 | static struct devlink_sb *devlink_sb_get_by_index(struct devlink *devlink, | |
206 | unsigned int sb_index) | |
207 | { | |
208 | struct devlink_sb *devlink_sb; | |
209 | ||
210 | list_for_each_entry(devlink_sb, &devlink->sb_list, list) { | |
211 | if (devlink_sb->index == sb_index) | |
212 | return devlink_sb; | |
213 | } | |
214 | return NULL; | |
215 | } | |
216 | ||
217 | static bool devlink_sb_index_exists(struct devlink *devlink, | |
218 | unsigned int sb_index) | |
219 | { | |
220 | return devlink_sb_get_by_index(devlink, sb_index); | |
221 | } | |
222 | ||
223 | static struct devlink_sb *devlink_sb_get_from_attrs(struct devlink *devlink, | |
224 | struct nlattr **attrs) | |
225 | { | |
226 | if (attrs[DEVLINK_ATTR_SB_INDEX]) { | |
227 | u32 sb_index = nla_get_u32(attrs[DEVLINK_ATTR_SB_INDEX]); | |
228 | struct devlink_sb *devlink_sb; | |
229 | ||
230 | devlink_sb = devlink_sb_get_by_index(devlink, sb_index); | |
231 | if (!devlink_sb) | |
232 | return ERR_PTR(-ENODEV); | |
233 | return devlink_sb; | |
234 | } | |
235 | return ERR_PTR(-EINVAL); | |
236 | } | |
237 | ||
238 | static struct devlink_sb *devlink_sb_get_from_info(struct devlink *devlink, | |
239 | struct genl_info *info) | |
240 | { | |
241 | return devlink_sb_get_from_attrs(devlink, info->attrs); | |
242 | } | |
243 | ||
244 | static int devlink_sb_pool_index_get_from_attrs(struct devlink_sb *devlink_sb, | |
245 | struct nlattr **attrs, | |
246 | u16 *p_pool_index) | |
247 | { | |
248 | u16 val; | |
249 | ||
250 | if (!attrs[DEVLINK_ATTR_SB_POOL_INDEX]) | |
251 | return -EINVAL; | |
252 | ||
253 | val = nla_get_u16(attrs[DEVLINK_ATTR_SB_POOL_INDEX]); | |
254 | if (val >= devlink_sb_pool_count(devlink_sb)) | |
255 | return -EINVAL; | |
256 | *p_pool_index = val; | |
257 | return 0; | |
258 | } | |
259 | ||
260 | static int devlink_sb_pool_index_get_from_info(struct devlink_sb *devlink_sb, | |
261 | struct genl_info *info, | |
262 | u16 *p_pool_index) | |
263 | { | |
264 | return devlink_sb_pool_index_get_from_attrs(devlink_sb, info->attrs, | |
265 | p_pool_index); | |
266 | } | |
267 | ||
268 | static int | |
269 | devlink_sb_pool_type_get_from_attrs(struct nlattr **attrs, | |
270 | enum devlink_sb_pool_type *p_pool_type) | |
271 | { | |
272 | u8 val; | |
273 | ||
274 | if (!attrs[DEVLINK_ATTR_SB_POOL_TYPE]) | |
275 | return -EINVAL; | |
276 | ||
277 | val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_TYPE]); | |
278 | if (val != DEVLINK_SB_POOL_TYPE_INGRESS && | |
279 | val != DEVLINK_SB_POOL_TYPE_EGRESS) | |
280 | return -EINVAL; | |
281 | *p_pool_type = val; | |
282 | return 0; | |
283 | } | |
284 | ||
285 | static int | |
286 | devlink_sb_pool_type_get_from_info(struct genl_info *info, | |
287 | enum devlink_sb_pool_type *p_pool_type) | |
288 | { | |
289 | return devlink_sb_pool_type_get_from_attrs(info->attrs, p_pool_type); | |
290 | } | |
291 | ||
292 | static int | |
293 | devlink_sb_th_type_get_from_attrs(struct nlattr **attrs, | |
294 | enum devlink_sb_threshold_type *p_th_type) | |
295 | { | |
296 | u8 val; | |
297 | ||
298 | if (!attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE]) | |
299 | return -EINVAL; | |
300 | ||
301 | val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE]); | |
302 | if (val != DEVLINK_SB_THRESHOLD_TYPE_STATIC && | |
303 | val != DEVLINK_SB_THRESHOLD_TYPE_DYNAMIC) | |
304 | return -EINVAL; | |
305 | *p_th_type = val; | |
306 | return 0; | |
307 | } | |
308 | ||
309 | static int | |
310 | devlink_sb_th_type_get_from_info(struct genl_info *info, | |
311 | enum devlink_sb_threshold_type *p_th_type) | |
312 | { | |
313 | return devlink_sb_th_type_get_from_attrs(info->attrs, p_th_type); | |
314 | } | |
315 | ||
316 | static int | |
317 | devlink_sb_tc_index_get_from_attrs(struct devlink_sb *devlink_sb, | |
318 | struct nlattr **attrs, | |
319 | enum devlink_sb_pool_type pool_type, | |
320 | u16 *p_tc_index) | |
321 | { | |
322 | u16 val; | |
323 | ||
324 | if (!attrs[DEVLINK_ATTR_SB_TC_INDEX]) | |
325 | return -EINVAL; | |
326 | ||
327 | val = nla_get_u16(attrs[DEVLINK_ATTR_SB_TC_INDEX]); | |
328 | if (pool_type == DEVLINK_SB_POOL_TYPE_INGRESS && | |
329 | val >= devlink_sb->ingress_tc_count) | |
330 | return -EINVAL; | |
331 | if (pool_type == DEVLINK_SB_POOL_TYPE_EGRESS && | |
332 | val >= devlink_sb->egress_tc_count) | |
333 | return -EINVAL; | |
334 | *p_tc_index = val; | |
335 | return 0; | |
336 | } | |
337 | ||
338 | static int | |
339 | devlink_sb_tc_index_get_from_info(struct devlink_sb *devlink_sb, | |
340 | struct genl_info *info, | |
341 | enum devlink_sb_pool_type pool_type, | |
342 | u16 *p_tc_index) | |
343 | { | |
344 | return devlink_sb_tc_index_get_from_attrs(devlink_sb, info->attrs, | |
345 | pool_type, p_tc_index); | |
346 | } | |
347 | ||
b16ebe92 AV |
348 | struct devlink_region { |
349 | struct devlink *devlink; | |
350 | struct list_head list; | |
e8937681 | 351 | const struct devlink_region_ops *ops; |
b16ebe92 AV |
352 | struct list_head snapshot_list; |
353 | u32 max_snapshots; | |
354 | u32 cur_snapshots; | |
355 | u64 size; | |
356 | }; | |
357 | ||
d7e52722 AV |
358 | struct devlink_snapshot { |
359 | struct list_head list; | |
360 | struct devlink_region *region; | |
d7e52722 AV |
361 | u8 *data; |
362 | u32 id; | |
363 | }; | |
364 | ||
b16ebe92 AV |
365 | static struct devlink_region * |
366 | devlink_region_get_by_name(struct devlink *devlink, const char *region_name) | |
367 | { | |
368 | struct devlink_region *region; | |
369 | ||
370 | list_for_each_entry(region, &devlink->region_list, list) | |
e8937681 | 371 | if (!strcmp(region->ops->name, region_name)) |
b16ebe92 AV |
372 | return region; |
373 | ||
374 | return NULL; | |
375 | } | |
376 | ||
d7e52722 AV |
377 | static struct devlink_snapshot * |
378 | devlink_region_snapshot_get_by_id(struct devlink_region *region, u32 id) | |
379 | { | |
380 | struct devlink_snapshot *snapshot; | |
381 | ||
382 | list_for_each_entry(snapshot, ®ion->snapshot_list, list) | |
383 | if (snapshot->id == id) | |
384 | return snapshot; | |
385 | ||
386 | return NULL; | |
387 | } | |
388 | ||
637989b5 PP |
389 | #define DEVLINK_NL_FLAG_NEED_PORT BIT(0) |
390 | #define DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT BIT(1) | |
2406e7e5 AS |
391 | |
392 | /* The per devlink instance lock is taken by default in the pre-doit | |
393 | * operation, yet several commands do not require this. The global | |
394 | * devlink lock is taken and protects from disruption by user-calls. | |
395 | */ | |
637989b5 | 396 | #define DEVLINK_NL_FLAG_NO_LOCK BIT(2) |
bfcd3a46 JP |
397 | |
398 | static int devlink_nl_pre_doit(const struct genl_ops *ops, | |
399 | struct sk_buff *skb, struct genl_info *info) | |
400 | { | |
f4f54166 | 401 | struct devlink_port *devlink_port; |
bfcd3a46 | 402 | struct devlink *devlink; |
2406e7e5 | 403 | int err; |
bfcd3a46 JP |
404 | |
405 | mutex_lock(&devlink_mutex); | |
406 | devlink = devlink_get_from_info(info); | |
407 | if (IS_ERR(devlink)) { | |
408 | mutex_unlock(&devlink_mutex); | |
409 | return PTR_ERR(devlink); | |
410 | } | |
2406e7e5 AS |
411 | if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK) |
412 | mutex_lock(&devlink->lock); | |
637989b5 PP |
413 | info->user_ptr[0] = devlink; |
414 | if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT) { | |
bfcd3a46 JP |
415 | devlink_port = devlink_port_get_from_info(devlink, info); |
416 | if (IS_ERR(devlink_port)) { | |
2406e7e5 AS |
417 | err = PTR_ERR(devlink_port); |
418 | goto unlock; | |
bfcd3a46 | 419 | } |
637989b5 | 420 | info->user_ptr[1] = devlink_port; |
f4f54166 | 421 | } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT) { |
f4f54166 VT |
422 | devlink_port = devlink_port_get_from_info(devlink, info); |
423 | if (!IS_ERR(devlink_port)) | |
424 | info->user_ptr[1] = devlink_port; | |
bfcd3a46 JP |
425 | } |
426 | return 0; | |
2406e7e5 AS |
427 | |
428 | unlock: | |
429 | if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK) | |
430 | mutex_unlock(&devlink->lock); | |
431 | mutex_unlock(&devlink_mutex); | |
432 | return err; | |
bfcd3a46 JP |
433 | } |
434 | ||
435 | static void devlink_nl_post_doit(const struct genl_ops *ops, | |
436 | struct sk_buff *skb, struct genl_info *info) | |
437 | { | |
2406e7e5 AS |
438 | struct devlink *devlink; |
439 | ||
637989b5 PP |
440 | devlink = info->user_ptr[0]; |
441 | if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK) | |
2406e7e5 | 442 | mutex_unlock(&devlink->lock); |
bfcd3a46 JP |
443 | mutex_unlock(&devlink_mutex); |
444 | } | |
445 | ||
489111e5 | 446 | static struct genl_family devlink_nl_family; |
bfcd3a46 JP |
447 | |
448 | enum devlink_multicast_groups { | |
449 | DEVLINK_MCGRP_CONFIG, | |
450 | }; | |
451 | ||
452 | static const struct genl_multicast_group devlink_nl_mcgrps[] = { | |
453 | [DEVLINK_MCGRP_CONFIG] = { .name = DEVLINK_GENL_MCGRP_CONFIG_NAME }, | |
454 | }; | |
455 | ||
456 | static int devlink_nl_put_handle(struct sk_buff *msg, struct devlink *devlink) | |
457 | { | |
458 | if (nla_put_string(msg, DEVLINK_ATTR_BUS_NAME, devlink->dev->bus->name)) | |
459 | return -EMSGSIZE; | |
460 | if (nla_put_string(msg, DEVLINK_ATTR_DEV_NAME, dev_name(devlink->dev))) | |
461 | return -EMSGSIZE; | |
462 | return 0; | |
463 | } | |
464 | ||
465 | static int devlink_nl_fill(struct sk_buff *msg, struct devlink *devlink, | |
466 | enum devlink_command cmd, u32 portid, | |
467 | u32 seq, int flags) | |
468 | { | |
469 | void *hdr; | |
470 | ||
471 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
472 | if (!hdr) | |
473 | return -EMSGSIZE; | |
474 | ||
475 | if (devlink_nl_put_handle(msg, devlink)) | |
476 | goto nla_put_failure; | |
2670ac26 JP |
477 | if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_FAILED, devlink->reload_failed)) |
478 | goto nla_put_failure; | |
bfcd3a46 JP |
479 | |
480 | genlmsg_end(msg, hdr); | |
481 | return 0; | |
482 | ||
483 | nla_put_failure: | |
484 | genlmsg_cancel(msg, hdr); | |
485 | return -EMSGSIZE; | |
486 | } | |
487 | ||
488 | static void devlink_notify(struct devlink *devlink, enum devlink_command cmd) | |
489 | { | |
490 | struct sk_buff *msg; | |
491 | int err; | |
492 | ||
493 | WARN_ON(cmd != DEVLINK_CMD_NEW && cmd != DEVLINK_CMD_DEL); | |
494 | ||
495 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
496 | if (!msg) | |
497 | return; | |
498 | ||
499 | err = devlink_nl_fill(msg, devlink, cmd, 0, 0, 0); | |
500 | if (err) { | |
501 | nlmsg_free(msg); | |
502 | return; | |
503 | } | |
504 | ||
505 | genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), | |
506 | msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL); | |
507 | } | |
508 | ||
b9ffcbaf JP |
509 | static int devlink_nl_port_attrs_put(struct sk_buff *msg, |
510 | struct devlink_port *devlink_port) | |
511 | { | |
512 | struct devlink_port_attrs *attrs = &devlink_port->attrs; | |
513 | ||
10a429ba | 514 | if (!devlink_port->attrs_set) |
b9ffcbaf | 515 | return 0; |
a21cf0a8 DR |
516 | if (attrs->lanes) { |
517 | if (nla_put_u32(msg, DEVLINK_ATTR_PORT_LANES, attrs->lanes)) | |
518 | return -EMSGSIZE; | |
519 | } | |
a0f49b54 DR |
520 | if (nla_put_u8(msg, DEVLINK_ATTR_PORT_SPLITTABLE, attrs->splittable)) |
521 | return -EMSGSIZE; | |
5ec1380a JP |
522 | if (nla_put_u16(msg, DEVLINK_ATTR_PORT_FLAVOUR, attrs->flavour)) |
523 | return -EMSGSIZE; | |
58b6be41 PP |
524 | switch (devlink_port->attrs.flavour) { |
525 | case DEVLINK_PORT_FLAVOUR_PCI_PF: | |
98fd2d65 PP |
526 | if (nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, |
527 | attrs->pci_pf.pf)) | |
528 | return -EMSGSIZE; | |
58b6be41 PP |
529 | break; |
530 | case DEVLINK_PORT_FLAVOUR_PCI_VF: | |
e41b6bf3 PP |
531 | if (nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, |
532 | attrs->pci_vf.pf) || | |
533 | nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_VF_NUMBER, | |
534 | attrs->pci_vf.vf)) | |
535 | return -EMSGSIZE; | |
58b6be41 PP |
536 | break; |
537 | case DEVLINK_PORT_FLAVOUR_PHYSICAL: | |
538 | case DEVLINK_PORT_FLAVOUR_CPU: | |
539 | case DEVLINK_PORT_FLAVOUR_DSA: | |
acf1ee44 | 540 | case DEVLINK_PORT_FLAVOUR_VIRTUAL: |
58b6be41 PP |
541 | if (nla_put_u32(msg, DEVLINK_ATTR_PORT_NUMBER, |
542 | attrs->phys.port_number)) | |
543 | return -EMSGSIZE; | |
544 | if (!attrs->split) | |
545 | return 0; | |
546 | if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_GROUP, | |
547 | attrs->phys.port_number)) | |
548 | return -EMSGSIZE; | |
549 | if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_SUBPORT_NUMBER, | |
550 | attrs->phys.split_subport_number)) | |
551 | return -EMSGSIZE; | |
552 | break; | |
553 | default: | |
554 | break; | |
98fd2d65 | 555 | } |
b9ffcbaf JP |
556 | return 0; |
557 | } | |
558 | ||
2a916ecc PP |
559 | static int |
560 | devlink_nl_port_function_attrs_put(struct sk_buff *msg, struct devlink_port *port, | |
561 | struct netlink_ext_ack *extack) | |
562 | { | |
563 | struct devlink *devlink = port->devlink; | |
564 | const struct devlink_ops *ops; | |
565 | struct nlattr *function_attr; | |
566 | bool empty_nest = true; | |
567 | int err = 0; | |
568 | ||
569 | function_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PORT_FUNCTION); | |
570 | if (!function_attr) | |
571 | return -EMSGSIZE; | |
572 | ||
573 | ops = devlink->ops; | |
574 | if (ops->port_function_hw_addr_get) { | |
29cb9868 | 575 | int hw_addr_len; |
2a916ecc PP |
576 | u8 hw_addr[MAX_ADDR_LEN]; |
577 | ||
578 | err = ops->port_function_hw_addr_get(devlink, port, hw_addr, &hw_addr_len, extack); | |
579 | if (err == -EOPNOTSUPP) { | |
580 | /* Port function attributes are optional for a port. If port doesn't | |
581 | * support function attribute, returning -EOPNOTSUPP is not an error. | |
582 | */ | |
583 | err = 0; | |
584 | goto out; | |
585 | } else if (err) { | |
586 | goto out; | |
587 | } | |
588 | err = nla_put(msg, DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR, hw_addr_len, hw_addr); | |
589 | if (err) | |
590 | goto out; | |
591 | empty_nest = false; | |
592 | } | |
593 | ||
594 | out: | |
595 | if (err || empty_nest) | |
596 | nla_nest_cancel(msg, function_attr); | |
597 | else | |
598 | nla_nest_end(msg, function_attr); | |
599 | return err; | |
600 | } | |
601 | ||
bfcd3a46 JP |
602 | static int devlink_nl_port_fill(struct sk_buff *msg, struct devlink *devlink, |
603 | struct devlink_port *devlink_port, | |
604 | enum devlink_command cmd, u32 portid, | |
a829eb0d PP |
605 | u32 seq, int flags, |
606 | struct netlink_ext_ack *extack) | |
bfcd3a46 JP |
607 | { |
608 | void *hdr; | |
609 | ||
610 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
611 | if (!hdr) | |
612 | return -EMSGSIZE; | |
613 | ||
614 | if (devlink_nl_put_handle(msg, devlink)) | |
615 | goto nla_put_failure; | |
616 | if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index)) | |
617 | goto nla_put_failure; | |
b8f97554 | 618 | |
0f420b6c | 619 | spin_lock_bh(&devlink_port->type_lock); |
bfcd3a46 | 620 | if (nla_put_u16(msg, DEVLINK_ATTR_PORT_TYPE, devlink_port->type)) |
b8f97554 | 621 | goto nla_put_failure_type_locked; |
bfcd3a46 JP |
622 | if (devlink_port->desired_type != DEVLINK_PORT_TYPE_NOTSET && |
623 | nla_put_u16(msg, DEVLINK_ATTR_PORT_DESIRED_TYPE, | |
624 | devlink_port->desired_type)) | |
b8f97554 | 625 | goto nla_put_failure_type_locked; |
bfcd3a46 JP |
626 | if (devlink_port->type == DEVLINK_PORT_TYPE_ETH) { |
627 | struct net_device *netdev = devlink_port->type_dev; | |
628 | ||
629 | if (netdev && | |
630 | (nla_put_u32(msg, DEVLINK_ATTR_PORT_NETDEV_IFINDEX, | |
631 | netdev->ifindex) || | |
632 | nla_put_string(msg, DEVLINK_ATTR_PORT_NETDEV_NAME, | |
633 | netdev->name))) | |
b8f97554 | 634 | goto nla_put_failure_type_locked; |
bfcd3a46 JP |
635 | } |
636 | if (devlink_port->type == DEVLINK_PORT_TYPE_IB) { | |
637 | struct ib_device *ibdev = devlink_port->type_dev; | |
638 | ||
639 | if (ibdev && | |
640 | nla_put_string(msg, DEVLINK_ATTR_PORT_IBDEV_NAME, | |
641 | ibdev->name)) | |
b8f97554 | 642 | goto nla_put_failure_type_locked; |
bfcd3a46 | 643 | } |
0f420b6c | 644 | spin_unlock_bh(&devlink_port->type_lock); |
b9ffcbaf | 645 | if (devlink_nl_port_attrs_put(msg, devlink_port)) |
bfcd3a46 | 646 | goto nla_put_failure; |
2a916ecc PP |
647 | if (devlink_nl_port_function_attrs_put(msg, devlink_port, extack)) |
648 | goto nla_put_failure; | |
bfcd3a46 JP |
649 | |
650 | genlmsg_end(msg, hdr); | |
651 | return 0; | |
652 | ||
b8f97554 | 653 | nla_put_failure_type_locked: |
0f420b6c | 654 | spin_unlock_bh(&devlink_port->type_lock); |
bfcd3a46 JP |
655 | nla_put_failure: |
656 | genlmsg_cancel(msg, hdr); | |
657 | return -EMSGSIZE; | |
658 | } | |
659 | ||
660 | static void devlink_port_notify(struct devlink_port *devlink_port, | |
661 | enum devlink_command cmd) | |
662 | { | |
663 | struct devlink *devlink = devlink_port->devlink; | |
664 | struct sk_buff *msg; | |
665 | int err; | |
666 | ||
667 | if (!devlink_port->registered) | |
668 | return; | |
669 | ||
670 | WARN_ON(cmd != DEVLINK_CMD_PORT_NEW && cmd != DEVLINK_CMD_PORT_DEL); | |
671 | ||
672 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
673 | if (!msg) | |
674 | return; | |
675 | ||
a829eb0d PP |
676 | err = devlink_nl_port_fill(msg, devlink, devlink_port, cmd, 0, 0, 0, |
677 | NULL); | |
bfcd3a46 JP |
678 | if (err) { |
679 | nlmsg_free(msg); | |
680 | return; | |
681 | } | |
682 | ||
683 | genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), | |
684 | msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL); | |
685 | } | |
686 | ||
687 | static int devlink_nl_cmd_get_doit(struct sk_buff *skb, struct genl_info *info) | |
688 | { | |
689 | struct devlink *devlink = info->user_ptr[0]; | |
690 | struct sk_buff *msg; | |
691 | int err; | |
692 | ||
693 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
694 | if (!msg) | |
695 | return -ENOMEM; | |
696 | ||
697 | err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW, | |
698 | info->snd_portid, info->snd_seq, 0); | |
699 | if (err) { | |
700 | nlmsg_free(msg); | |
701 | return err; | |
702 | } | |
703 | ||
704 | return genlmsg_reply(msg, info); | |
705 | } | |
706 | ||
707 | static int devlink_nl_cmd_get_dumpit(struct sk_buff *msg, | |
708 | struct netlink_callback *cb) | |
709 | { | |
710 | struct devlink *devlink; | |
711 | int start = cb->args[0]; | |
712 | int idx = 0; | |
713 | int err; | |
714 | ||
715 | mutex_lock(&devlink_mutex); | |
716 | list_for_each_entry(devlink, &devlink_list, list) { | |
717 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) | |
718 | continue; | |
719 | if (idx < start) { | |
720 | idx++; | |
721 | continue; | |
722 | } | |
723 | err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW, | |
724 | NETLINK_CB(cb->skb).portid, | |
725 | cb->nlh->nlmsg_seq, NLM_F_MULTI); | |
726 | if (err) | |
727 | goto out; | |
728 | idx++; | |
729 | } | |
730 | out: | |
731 | mutex_unlock(&devlink_mutex); | |
732 | ||
733 | cb->args[0] = idx; | |
734 | return msg->len; | |
735 | } | |
736 | ||
737 | static int devlink_nl_cmd_port_get_doit(struct sk_buff *skb, | |
738 | struct genl_info *info) | |
739 | { | |
637989b5 | 740 | struct devlink_port *devlink_port = info->user_ptr[1]; |
1fc2257e | 741 | struct devlink *devlink = devlink_port->devlink; |
bfcd3a46 JP |
742 | struct sk_buff *msg; |
743 | int err; | |
744 | ||
745 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
746 | if (!msg) | |
747 | return -ENOMEM; | |
748 | ||
749 | err = devlink_nl_port_fill(msg, devlink, devlink_port, | |
750 | DEVLINK_CMD_PORT_NEW, | |
a829eb0d PP |
751 | info->snd_portid, info->snd_seq, 0, |
752 | info->extack); | |
bfcd3a46 JP |
753 | if (err) { |
754 | nlmsg_free(msg); | |
755 | return err; | |
756 | } | |
757 | ||
758 | return genlmsg_reply(msg, info); | |
759 | } | |
760 | ||
761 | static int devlink_nl_cmd_port_get_dumpit(struct sk_buff *msg, | |
762 | struct netlink_callback *cb) | |
763 | { | |
764 | struct devlink *devlink; | |
765 | struct devlink_port *devlink_port; | |
766 | int start = cb->args[0]; | |
767 | int idx = 0; | |
768 | int err; | |
769 | ||
770 | mutex_lock(&devlink_mutex); | |
bfcd3a46 JP |
771 | list_for_each_entry(devlink, &devlink_list, list) { |
772 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) | |
773 | continue; | |
2406e7e5 | 774 | mutex_lock(&devlink->lock); |
bfcd3a46 JP |
775 | list_for_each_entry(devlink_port, &devlink->port_list, list) { |
776 | if (idx < start) { | |
777 | idx++; | |
778 | continue; | |
779 | } | |
780 | err = devlink_nl_port_fill(msg, devlink, devlink_port, | |
781 | DEVLINK_CMD_NEW, | |
782 | NETLINK_CB(cb->skb).portid, | |
783 | cb->nlh->nlmsg_seq, | |
a829eb0d PP |
784 | NLM_F_MULTI, |
785 | cb->extack); | |
2406e7e5 AS |
786 | if (err) { |
787 | mutex_unlock(&devlink->lock); | |
bfcd3a46 | 788 | goto out; |
2406e7e5 | 789 | } |
bfcd3a46 JP |
790 | idx++; |
791 | } | |
2406e7e5 | 792 | mutex_unlock(&devlink->lock); |
bfcd3a46 JP |
793 | } |
794 | out: | |
bfcd3a46 JP |
795 | mutex_unlock(&devlink_mutex); |
796 | ||
797 | cb->args[0] = idx; | |
798 | return msg->len; | |
799 | } | |
800 | ||
801 | static int devlink_port_type_set(struct devlink *devlink, | |
802 | struct devlink_port *devlink_port, | |
803 | enum devlink_port_type port_type) | |
804 | ||
805 | { | |
806 | int err; | |
807 | ||
be6fe1d8 | 808 | if (devlink->ops->port_type_set) { |
bfcd3a46 JP |
809 | if (port_type == DEVLINK_PORT_TYPE_NOTSET) |
810 | return -EINVAL; | |
6edf1017 ER |
811 | if (port_type == devlink_port->type) |
812 | return 0; | |
bfcd3a46 JP |
813 | err = devlink->ops->port_type_set(devlink_port, port_type); |
814 | if (err) | |
815 | return err; | |
816 | devlink_port->desired_type = port_type; | |
817 | devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW); | |
818 | return 0; | |
819 | } | |
820 | return -EOPNOTSUPP; | |
821 | } | |
822 | ||
a1e8ae90 PP |
823 | static int |
824 | devlink_port_function_hw_addr_set(struct devlink *devlink, struct devlink_port *port, | |
825 | const struct nlattr *attr, struct netlink_ext_ack *extack) | |
826 | { | |
827 | const struct devlink_ops *ops; | |
828 | const u8 *hw_addr; | |
829 | int hw_addr_len; | |
830 | int err; | |
831 | ||
832 | hw_addr = nla_data(attr); | |
833 | hw_addr_len = nla_len(attr); | |
834 | if (hw_addr_len > MAX_ADDR_LEN) { | |
835 | NL_SET_ERR_MSG_MOD(extack, "Port function hardware address too long"); | |
836 | return -EINVAL; | |
837 | } | |
838 | if (port->type == DEVLINK_PORT_TYPE_ETH) { | |
839 | if (hw_addr_len != ETH_ALEN) { | |
840 | NL_SET_ERR_MSG_MOD(extack, "Address must be 6 bytes for Ethernet device"); | |
841 | return -EINVAL; | |
842 | } | |
843 | if (!is_unicast_ether_addr(hw_addr)) { | |
844 | NL_SET_ERR_MSG_MOD(extack, "Non-unicast hardware address unsupported"); | |
845 | return -EINVAL; | |
846 | } | |
847 | } | |
848 | ||
849 | ops = devlink->ops; | |
850 | if (!ops->port_function_hw_addr_set) { | |
851 | NL_SET_ERR_MSG_MOD(extack, "Port doesn't support function attributes"); | |
852 | return -EOPNOTSUPP; | |
853 | } | |
854 | ||
855 | err = ops->port_function_hw_addr_set(devlink, port, hw_addr, hw_addr_len, extack); | |
856 | if (err) | |
857 | return err; | |
858 | ||
859 | devlink_port_notify(port, DEVLINK_CMD_PORT_NEW); | |
860 | return 0; | |
861 | } | |
862 | ||
863 | static int | |
864 | devlink_port_function_set(struct devlink *devlink, struct devlink_port *port, | |
865 | const struct nlattr *attr, struct netlink_ext_ack *extack) | |
866 | { | |
867 | struct nlattr *tb[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1]; | |
868 | int err; | |
869 | ||
870 | err = nla_parse_nested(tb, DEVLINK_PORT_FUNCTION_ATTR_MAX, attr, | |
871 | devlink_function_nl_policy, extack); | |
872 | if (err < 0) { | |
873 | NL_SET_ERR_MSG_MOD(extack, "Fail to parse port function attributes"); | |
874 | return err; | |
875 | } | |
876 | ||
877 | attr = tb[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR]; | |
878 | if (attr) | |
879 | err = devlink_port_function_hw_addr_set(devlink, port, attr, extack); | |
880 | ||
881 | return err; | |
882 | } | |
883 | ||
bfcd3a46 JP |
884 | static int devlink_nl_cmd_port_set_doit(struct sk_buff *skb, |
885 | struct genl_info *info) | |
886 | { | |
637989b5 | 887 | struct devlink_port *devlink_port = info->user_ptr[1]; |
1fc2257e | 888 | struct devlink *devlink = devlink_port->devlink; |
bfcd3a46 JP |
889 | int err; |
890 | ||
891 | if (info->attrs[DEVLINK_ATTR_PORT_TYPE]) { | |
892 | enum devlink_port_type port_type; | |
893 | ||
894 | port_type = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_TYPE]); | |
895 | err = devlink_port_type_set(devlink, devlink_port, port_type); | |
896 | if (err) | |
897 | return err; | |
898 | } | |
a1e8ae90 PP |
899 | |
900 | if (info->attrs[DEVLINK_ATTR_PORT_FUNCTION]) { | |
901 | struct nlattr *attr = info->attrs[DEVLINK_ATTR_PORT_FUNCTION]; | |
902 | struct netlink_ext_ack *extack = info->extack; | |
903 | ||
904 | err = devlink_port_function_set(devlink, devlink_port, attr, extack); | |
905 | if (err) | |
906 | return err; | |
907 | } | |
908 | ||
bfcd3a46 JP |
909 | return 0; |
910 | } | |
911 | ||
ac0fc8a1 DA |
912 | static int devlink_port_split(struct devlink *devlink, u32 port_index, |
913 | u32 count, struct netlink_ext_ack *extack) | |
bfcd3a46 JP |
914 | |
915 | { | |
be6fe1d8 | 916 | if (devlink->ops->port_split) |
ac0fc8a1 DA |
917 | return devlink->ops->port_split(devlink, port_index, count, |
918 | extack); | |
bfcd3a46 JP |
919 | return -EOPNOTSUPP; |
920 | } | |
921 | ||
922 | static int devlink_nl_cmd_port_split_doit(struct sk_buff *skb, | |
923 | struct genl_info *info) | |
924 | { | |
925 | struct devlink *devlink = info->user_ptr[0]; | |
82901ad1 | 926 | struct devlink_port *devlink_port; |
bfcd3a46 JP |
927 | u32 port_index; |
928 | u32 count; | |
929 | ||
930 | if (!info->attrs[DEVLINK_ATTR_PORT_INDEX] || | |
931 | !info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT]) | |
932 | return -EINVAL; | |
933 | ||
82901ad1 | 934 | devlink_port = devlink_port_get_from_info(devlink, info); |
bfcd3a46 JP |
935 | port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]); |
936 | count = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT]); | |
82901ad1 DR |
937 | |
938 | if (IS_ERR(devlink_port)) | |
939 | return -EINVAL; | |
940 | ||
941 | if (!devlink_port->attrs.splittable) { | |
942 | /* Split ports cannot be split. */ | |
943 | if (devlink_port->attrs.split) | |
944 | NL_SET_ERR_MSG_MOD(info->extack, "Port cannot be split further"); | |
945 | else | |
946 | NL_SET_ERR_MSG_MOD(info->extack, "Port cannot be split"); | |
947 | return -EINVAL; | |
948 | } | |
949 | ||
950 | if (count < 2 || !is_power_of_2(count) || count > devlink_port->attrs.lanes) { | |
951 | NL_SET_ERR_MSG_MOD(info->extack, "Invalid split count"); | |
952 | return -EINVAL; | |
953 | } | |
954 | ||
ac0fc8a1 | 955 | return devlink_port_split(devlink, port_index, count, info->extack); |
bfcd3a46 JP |
956 | } |
957 | ||
ac0fc8a1 DA |
958 | static int devlink_port_unsplit(struct devlink *devlink, u32 port_index, |
959 | struct netlink_ext_ack *extack) | |
bfcd3a46 JP |
960 | |
961 | { | |
be6fe1d8 | 962 | if (devlink->ops->port_unsplit) |
ac0fc8a1 | 963 | return devlink->ops->port_unsplit(devlink, port_index, extack); |
bfcd3a46 JP |
964 | return -EOPNOTSUPP; |
965 | } | |
966 | ||
967 | static int devlink_nl_cmd_port_unsplit_doit(struct sk_buff *skb, | |
968 | struct genl_info *info) | |
969 | { | |
970 | struct devlink *devlink = info->user_ptr[0]; | |
971 | u32 port_index; | |
972 | ||
973 | if (!info->attrs[DEVLINK_ATTR_PORT_INDEX]) | |
974 | return -EINVAL; | |
975 | ||
976 | port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]); | |
ac0fc8a1 | 977 | return devlink_port_unsplit(devlink, port_index, info->extack); |
bfcd3a46 JP |
978 | } |
979 | ||
bf797471 JP |
980 | static int devlink_nl_sb_fill(struct sk_buff *msg, struct devlink *devlink, |
981 | struct devlink_sb *devlink_sb, | |
982 | enum devlink_command cmd, u32 portid, | |
983 | u32 seq, int flags) | |
984 | { | |
985 | void *hdr; | |
986 | ||
987 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
988 | if (!hdr) | |
989 | return -EMSGSIZE; | |
990 | ||
991 | if (devlink_nl_put_handle(msg, devlink)) | |
992 | goto nla_put_failure; | |
993 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index)) | |
994 | goto nla_put_failure; | |
995 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_SIZE, devlink_sb->size)) | |
996 | goto nla_put_failure; | |
997 | if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_POOL_COUNT, | |
998 | devlink_sb->ingress_pools_count)) | |
999 | goto nla_put_failure; | |
1000 | if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_POOL_COUNT, | |
1001 | devlink_sb->egress_pools_count)) | |
1002 | goto nla_put_failure; | |
1003 | if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_TC_COUNT, | |
1004 | devlink_sb->ingress_tc_count)) | |
1005 | goto nla_put_failure; | |
1006 | if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_TC_COUNT, | |
1007 | devlink_sb->egress_tc_count)) | |
1008 | goto nla_put_failure; | |
1009 | ||
1010 | genlmsg_end(msg, hdr); | |
1011 | return 0; | |
1012 | ||
1013 | nla_put_failure: | |
1014 | genlmsg_cancel(msg, hdr); | |
1015 | return -EMSGSIZE; | |
1016 | } | |
1017 | ||
1018 | static int devlink_nl_cmd_sb_get_doit(struct sk_buff *skb, | |
1019 | struct genl_info *info) | |
1020 | { | |
1021 | struct devlink *devlink = info->user_ptr[0]; | |
637989b5 | 1022 | struct devlink_sb *devlink_sb; |
bf797471 JP |
1023 | struct sk_buff *msg; |
1024 | int err; | |
1025 | ||
637989b5 PP |
1026 | devlink_sb = devlink_sb_get_from_info(devlink, info); |
1027 | if (IS_ERR(devlink_sb)) | |
1028 | return PTR_ERR(devlink_sb); | |
1029 | ||
bf797471 JP |
1030 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
1031 | if (!msg) | |
1032 | return -ENOMEM; | |
1033 | ||
1034 | err = devlink_nl_sb_fill(msg, devlink, devlink_sb, | |
1035 | DEVLINK_CMD_SB_NEW, | |
1036 | info->snd_portid, info->snd_seq, 0); | |
1037 | if (err) { | |
1038 | nlmsg_free(msg); | |
1039 | return err; | |
1040 | } | |
1041 | ||
1042 | return genlmsg_reply(msg, info); | |
1043 | } | |
1044 | ||
1045 | static int devlink_nl_cmd_sb_get_dumpit(struct sk_buff *msg, | |
1046 | struct netlink_callback *cb) | |
1047 | { | |
1048 | struct devlink *devlink; | |
1049 | struct devlink_sb *devlink_sb; | |
1050 | int start = cb->args[0]; | |
1051 | int idx = 0; | |
1052 | int err; | |
1053 | ||
1054 | mutex_lock(&devlink_mutex); | |
1055 | list_for_each_entry(devlink, &devlink_list, list) { | |
1056 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) | |
1057 | continue; | |
2406e7e5 | 1058 | mutex_lock(&devlink->lock); |
bf797471 JP |
1059 | list_for_each_entry(devlink_sb, &devlink->sb_list, list) { |
1060 | if (idx < start) { | |
1061 | idx++; | |
1062 | continue; | |
1063 | } | |
1064 | err = devlink_nl_sb_fill(msg, devlink, devlink_sb, | |
1065 | DEVLINK_CMD_SB_NEW, | |
1066 | NETLINK_CB(cb->skb).portid, | |
1067 | cb->nlh->nlmsg_seq, | |
1068 | NLM_F_MULTI); | |
2406e7e5 AS |
1069 | if (err) { |
1070 | mutex_unlock(&devlink->lock); | |
bf797471 | 1071 | goto out; |
2406e7e5 | 1072 | } |
bf797471 JP |
1073 | idx++; |
1074 | } | |
2406e7e5 | 1075 | mutex_unlock(&devlink->lock); |
bf797471 JP |
1076 | } |
1077 | out: | |
1078 | mutex_unlock(&devlink_mutex); | |
1079 | ||
1080 | cb->args[0] = idx; | |
1081 | return msg->len; | |
1082 | } | |
1083 | ||
1084 | static int devlink_nl_sb_pool_fill(struct sk_buff *msg, struct devlink *devlink, | |
1085 | struct devlink_sb *devlink_sb, | |
1086 | u16 pool_index, enum devlink_command cmd, | |
1087 | u32 portid, u32 seq, int flags) | |
1088 | { | |
1089 | struct devlink_sb_pool_info pool_info; | |
1090 | void *hdr; | |
1091 | int err; | |
1092 | ||
1093 | err = devlink->ops->sb_pool_get(devlink, devlink_sb->index, | |
1094 | pool_index, &pool_info); | |
1095 | if (err) | |
1096 | return err; | |
1097 | ||
1098 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
1099 | if (!hdr) | |
1100 | return -EMSGSIZE; | |
1101 | ||
1102 | if (devlink_nl_put_handle(msg, devlink)) | |
1103 | goto nla_put_failure; | |
1104 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index)) | |
1105 | goto nla_put_failure; | |
1106 | if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index)) | |
1107 | goto nla_put_failure; | |
1108 | if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_info.pool_type)) | |
1109 | goto nla_put_failure; | |
1110 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_SIZE, pool_info.size)) | |
1111 | goto nla_put_failure; | |
1112 | if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE, | |
1113 | pool_info.threshold_type)) | |
1114 | goto nla_put_failure; | |
bff5731d JK |
1115 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_CELL_SIZE, |
1116 | pool_info.cell_size)) | |
1117 | goto nla_put_failure; | |
bf797471 JP |
1118 | |
1119 | genlmsg_end(msg, hdr); | |
1120 | return 0; | |
1121 | ||
1122 | nla_put_failure: | |
1123 | genlmsg_cancel(msg, hdr); | |
1124 | return -EMSGSIZE; | |
1125 | } | |
1126 | ||
1127 | static int devlink_nl_cmd_sb_pool_get_doit(struct sk_buff *skb, | |
1128 | struct genl_info *info) | |
1129 | { | |
1130 | struct devlink *devlink = info->user_ptr[0]; | |
637989b5 | 1131 | struct devlink_sb *devlink_sb; |
bf797471 JP |
1132 | struct sk_buff *msg; |
1133 | u16 pool_index; | |
1134 | int err; | |
1135 | ||
637989b5 PP |
1136 | devlink_sb = devlink_sb_get_from_info(devlink, info); |
1137 | if (IS_ERR(devlink_sb)) | |
1138 | return PTR_ERR(devlink_sb); | |
1139 | ||
bf797471 JP |
1140 | err = devlink_sb_pool_index_get_from_info(devlink_sb, info, |
1141 | &pool_index); | |
1142 | if (err) | |
1143 | return err; | |
1144 | ||
be6fe1d8 | 1145 | if (!devlink->ops->sb_pool_get) |
bf797471 JP |
1146 | return -EOPNOTSUPP; |
1147 | ||
1148 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1149 | if (!msg) | |
1150 | return -ENOMEM; | |
1151 | ||
1152 | err = devlink_nl_sb_pool_fill(msg, devlink, devlink_sb, pool_index, | |
1153 | DEVLINK_CMD_SB_POOL_NEW, | |
1154 | info->snd_portid, info->snd_seq, 0); | |
1155 | if (err) { | |
1156 | nlmsg_free(msg); | |
1157 | return err; | |
1158 | } | |
1159 | ||
1160 | return genlmsg_reply(msg, info); | |
1161 | } | |
1162 | ||
1163 | static int __sb_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx, | |
1164 | struct devlink *devlink, | |
1165 | struct devlink_sb *devlink_sb, | |
1166 | u32 portid, u32 seq) | |
1167 | { | |
1168 | u16 pool_count = devlink_sb_pool_count(devlink_sb); | |
1169 | u16 pool_index; | |
1170 | int err; | |
1171 | ||
1172 | for (pool_index = 0; pool_index < pool_count; pool_index++) { | |
1173 | if (*p_idx < start) { | |
1174 | (*p_idx)++; | |
1175 | continue; | |
1176 | } | |
1177 | err = devlink_nl_sb_pool_fill(msg, devlink, | |
1178 | devlink_sb, | |
1179 | pool_index, | |
1180 | DEVLINK_CMD_SB_POOL_NEW, | |
1181 | portid, seq, NLM_F_MULTI); | |
1182 | if (err) | |
1183 | return err; | |
1184 | (*p_idx)++; | |
1185 | } | |
1186 | return 0; | |
1187 | } | |
1188 | ||
1189 | static int devlink_nl_cmd_sb_pool_get_dumpit(struct sk_buff *msg, | |
1190 | struct netlink_callback *cb) | |
1191 | { | |
1192 | struct devlink *devlink; | |
1193 | struct devlink_sb *devlink_sb; | |
1194 | int start = cb->args[0]; | |
1195 | int idx = 0; | |
c62c2cfb | 1196 | int err = 0; |
bf797471 JP |
1197 | |
1198 | mutex_lock(&devlink_mutex); | |
1199 | list_for_each_entry(devlink, &devlink_list, list) { | |
1200 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) || | |
be6fe1d8 | 1201 | !devlink->ops->sb_pool_get) |
bf797471 | 1202 | continue; |
2406e7e5 | 1203 | mutex_lock(&devlink->lock); |
bf797471 JP |
1204 | list_for_each_entry(devlink_sb, &devlink->sb_list, list) { |
1205 | err = __sb_pool_get_dumpit(msg, start, &idx, devlink, | |
1206 | devlink_sb, | |
1207 | NETLINK_CB(cb->skb).portid, | |
1208 | cb->nlh->nlmsg_seq); | |
82274d07 JK |
1209 | if (err == -EOPNOTSUPP) { |
1210 | err = 0; | |
1211 | } else if (err) { | |
2406e7e5 | 1212 | mutex_unlock(&devlink->lock); |
bf797471 | 1213 | goto out; |
2406e7e5 | 1214 | } |
bf797471 | 1215 | } |
2406e7e5 | 1216 | mutex_unlock(&devlink->lock); |
bf797471 JP |
1217 | } |
1218 | out: | |
1219 | mutex_unlock(&devlink_mutex); | |
1220 | ||
c62c2cfb JP |
1221 | if (err != -EMSGSIZE) |
1222 | return err; | |
1223 | ||
bf797471 JP |
1224 | cb->args[0] = idx; |
1225 | return msg->len; | |
1226 | } | |
1227 | ||
1228 | static int devlink_sb_pool_set(struct devlink *devlink, unsigned int sb_index, | |
1229 | u16 pool_index, u32 size, | |
f2ad1a52 IS |
1230 | enum devlink_sb_threshold_type threshold_type, |
1231 | struct netlink_ext_ack *extack) | |
bf797471 JP |
1232 | |
1233 | { | |
1234 | const struct devlink_ops *ops = devlink->ops; | |
1235 | ||
be6fe1d8 | 1236 | if (ops->sb_pool_set) |
bf797471 | 1237 | return ops->sb_pool_set(devlink, sb_index, pool_index, |
f2ad1a52 | 1238 | size, threshold_type, extack); |
bf797471 JP |
1239 | return -EOPNOTSUPP; |
1240 | } | |
1241 | ||
1242 | static int devlink_nl_cmd_sb_pool_set_doit(struct sk_buff *skb, | |
1243 | struct genl_info *info) | |
1244 | { | |
1245 | struct devlink *devlink = info->user_ptr[0]; | |
bf797471 | 1246 | enum devlink_sb_threshold_type threshold_type; |
637989b5 | 1247 | struct devlink_sb *devlink_sb; |
bf797471 JP |
1248 | u16 pool_index; |
1249 | u32 size; | |
1250 | int err; | |
1251 | ||
637989b5 PP |
1252 | devlink_sb = devlink_sb_get_from_info(devlink, info); |
1253 | if (IS_ERR(devlink_sb)) | |
1254 | return PTR_ERR(devlink_sb); | |
1255 | ||
bf797471 JP |
1256 | err = devlink_sb_pool_index_get_from_info(devlink_sb, info, |
1257 | &pool_index); | |
1258 | if (err) | |
1259 | return err; | |
1260 | ||
1261 | err = devlink_sb_th_type_get_from_info(info, &threshold_type); | |
1262 | if (err) | |
1263 | return err; | |
1264 | ||
1265 | if (!info->attrs[DEVLINK_ATTR_SB_POOL_SIZE]) | |
1266 | return -EINVAL; | |
1267 | ||
1268 | size = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_POOL_SIZE]); | |
1269 | return devlink_sb_pool_set(devlink, devlink_sb->index, | |
f2ad1a52 IS |
1270 | pool_index, size, threshold_type, |
1271 | info->extack); | |
bf797471 JP |
1272 | } |
1273 | ||
1274 | static int devlink_nl_sb_port_pool_fill(struct sk_buff *msg, | |
1275 | struct devlink *devlink, | |
1276 | struct devlink_port *devlink_port, | |
1277 | struct devlink_sb *devlink_sb, | |
1278 | u16 pool_index, | |
1279 | enum devlink_command cmd, | |
1280 | u32 portid, u32 seq, int flags) | |
1281 | { | |
df38dafd | 1282 | const struct devlink_ops *ops = devlink->ops; |
bf797471 JP |
1283 | u32 threshold; |
1284 | void *hdr; | |
1285 | int err; | |
1286 | ||
df38dafd JP |
1287 | err = ops->sb_port_pool_get(devlink_port, devlink_sb->index, |
1288 | pool_index, &threshold); | |
bf797471 JP |
1289 | if (err) |
1290 | return err; | |
1291 | ||
1292 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
1293 | if (!hdr) | |
1294 | return -EMSGSIZE; | |
1295 | ||
1296 | if (devlink_nl_put_handle(msg, devlink)) | |
1297 | goto nla_put_failure; | |
1298 | if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index)) | |
1299 | goto nla_put_failure; | |
1300 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index)) | |
1301 | goto nla_put_failure; | |
1302 | if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index)) | |
1303 | goto nla_put_failure; | |
1304 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold)) | |
1305 | goto nla_put_failure; | |
1306 | ||
df38dafd JP |
1307 | if (ops->sb_occ_port_pool_get) { |
1308 | u32 cur; | |
1309 | u32 max; | |
1310 | ||
1311 | err = ops->sb_occ_port_pool_get(devlink_port, devlink_sb->index, | |
1312 | pool_index, &cur, &max); | |
1313 | if (err && err != -EOPNOTSUPP) | |
1314 | return err; | |
1315 | if (!err) { | |
1316 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur)) | |
1317 | goto nla_put_failure; | |
1318 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max)) | |
1319 | goto nla_put_failure; | |
1320 | } | |
1321 | } | |
1322 | ||
bf797471 JP |
1323 | genlmsg_end(msg, hdr); |
1324 | return 0; | |
1325 | ||
1326 | nla_put_failure: | |
1327 | genlmsg_cancel(msg, hdr); | |
1328 | return -EMSGSIZE; | |
1329 | } | |
1330 | ||
1331 | static int devlink_nl_cmd_sb_port_pool_get_doit(struct sk_buff *skb, | |
1332 | struct genl_info *info) | |
1333 | { | |
637989b5 | 1334 | struct devlink_port *devlink_port = info->user_ptr[1]; |
bf797471 | 1335 | struct devlink *devlink = devlink_port->devlink; |
637989b5 | 1336 | struct devlink_sb *devlink_sb; |
bf797471 JP |
1337 | struct sk_buff *msg; |
1338 | u16 pool_index; | |
1339 | int err; | |
1340 | ||
637989b5 PP |
1341 | devlink_sb = devlink_sb_get_from_info(devlink, info); |
1342 | if (IS_ERR(devlink_sb)) | |
1343 | return PTR_ERR(devlink_sb); | |
1344 | ||
bf797471 JP |
1345 | err = devlink_sb_pool_index_get_from_info(devlink_sb, info, |
1346 | &pool_index); | |
1347 | if (err) | |
1348 | return err; | |
1349 | ||
be6fe1d8 | 1350 | if (!devlink->ops->sb_port_pool_get) |
bf797471 JP |
1351 | return -EOPNOTSUPP; |
1352 | ||
1353 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1354 | if (!msg) | |
1355 | return -ENOMEM; | |
1356 | ||
1357 | err = devlink_nl_sb_port_pool_fill(msg, devlink, devlink_port, | |
1358 | devlink_sb, pool_index, | |
1359 | DEVLINK_CMD_SB_PORT_POOL_NEW, | |
1360 | info->snd_portid, info->snd_seq, 0); | |
1361 | if (err) { | |
1362 | nlmsg_free(msg); | |
1363 | return err; | |
1364 | } | |
1365 | ||
1366 | return genlmsg_reply(msg, info); | |
1367 | } | |
1368 | ||
1369 | static int __sb_port_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx, | |
1370 | struct devlink *devlink, | |
1371 | struct devlink_sb *devlink_sb, | |
1372 | u32 portid, u32 seq) | |
1373 | { | |
1374 | struct devlink_port *devlink_port; | |
1375 | u16 pool_count = devlink_sb_pool_count(devlink_sb); | |
1376 | u16 pool_index; | |
1377 | int err; | |
1378 | ||
1379 | list_for_each_entry(devlink_port, &devlink->port_list, list) { | |
1380 | for (pool_index = 0; pool_index < pool_count; pool_index++) { | |
1381 | if (*p_idx < start) { | |
1382 | (*p_idx)++; | |
1383 | continue; | |
1384 | } | |
1385 | err = devlink_nl_sb_port_pool_fill(msg, devlink, | |
1386 | devlink_port, | |
1387 | devlink_sb, | |
1388 | pool_index, | |
1389 | DEVLINK_CMD_SB_PORT_POOL_NEW, | |
1390 | portid, seq, | |
1391 | NLM_F_MULTI); | |
1392 | if (err) | |
1393 | return err; | |
1394 | (*p_idx)++; | |
1395 | } | |
1396 | } | |
1397 | return 0; | |
1398 | } | |
1399 | ||
1400 | static int devlink_nl_cmd_sb_port_pool_get_dumpit(struct sk_buff *msg, | |
1401 | struct netlink_callback *cb) | |
1402 | { | |
1403 | struct devlink *devlink; | |
1404 | struct devlink_sb *devlink_sb; | |
1405 | int start = cb->args[0]; | |
1406 | int idx = 0; | |
c62c2cfb | 1407 | int err = 0; |
bf797471 JP |
1408 | |
1409 | mutex_lock(&devlink_mutex); | |
bf797471 JP |
1410 | list_for_each_entry(devlink, &devlink_list, list) { |
1411 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) || | |
be6fe1d8 | 1412 | !devlink->ops->sb_port_pool_get) |
bf797471 | 1413 | continue; |
2406e7e5 | 1414 | mutex_lock(&devlink->lock); |
bf797471 JP |
1415 | list_for_each_entry(devlink_sb, &devlink->sb_list, list) { |
1416 | err = __sb_port_pool_get_dumpit(msg, start, &idx, | |
1417 | devlink, devlink_sb, | |
1418 | NETLINK_CB(cb->skb).portid, | |
1419 | cb->nlh->nlmsg_seq); | |
82274d07 JK |
1420 | if (err == -EOPNOTSUPP) { |
1421 | err = 0; | |
1422 | } else if (err) { | |
2406e7e5 | 1423 | mutex_unlock(&devlink->lock); |
bf797471 | 1424 | goto out; |
2406e7e5 | 1425 | } |
bf797471 | 1426 | } |
2406e7e5 | 1427 | mutex_unlock(&devlink->lock); |
bf797471 JP |
1428 | } |
1429 | out: | |
bf797471 JP |
1430 | mutex_unlock(&devlink_mutex); |
1431 | ||
c62c2cfb JP |
1432 | if (err != -EMSGSIZE) |
1433 | return err; | |
1434 | ||
bf797471 JP |
1435 | cb->args[0] = idx; |
1436 | return msg->len; | |
1437 | } | |
1438 | ||
1439 | static int devlink_sb_port_pool_set(struct devlink_port *devlink_port, | |
1440 | unsigned int sb_index, u16 pool_index, | |
f2ad1a52 IS |
1441 | u32 threshold, |
1442 | struct netlink_ext_ack *extack) | |
bf797471 JP |
1443 | |
1444 | { | |
1445 | const struct devlink_ops *ops = devlink_port->devlink->ops; | |
1446 | ||
be6fe1d8 | 1447 | if (ops->sb_port_pool_set) |
bf797471 | 1448 | return ops->sb_port_pool_set(devlink_port, sb_index, |
f2ad1a52 | 1449 | pool_index, threshold, extack); |
bf797471 JP |
1450 | return -EOPNOTSUPP; |
1451 | } | |
1452 | ||
1453 | static int devlink_nl_cmd_sb_port_pool_set_doit(struct sk_buff *skb, | |
1454 | struct genl_info *info) | |
1455 | { | |
637989b5 PP |
1456 | struct devlink_port *devlink_port = info->user_ptr[1]; |
1457 | struct devlink *devlink = info->user_ptr[0]; | |
1458 | struct devlink_sb *devlink_sb; | |
bf797471 JP |
1459 | u16 pool_index; |
1460 | u32 threshold; | |
1461 | int err; | |
1462 | ||
637989b5 PP |
1463 | devlink_sb = devlink_sb_get_from_info(devlink, info); |
1464 | if (IS_ERR(devlink_sb)) | |
1465 | return PTR_ERR(devlink_sb); | |
1466 | ||
bf797471 JP |
1467 | err = devlink_sb_pool_index_get_from_info(devlink_sb, info, |
1468 | &pool_index); | |
1469 | if (err) | |
1470 | return err; | |
1471 | ||
1472 | if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD]) | |
1473 | return -EINVAL; | |
1474 | ||
1475 | threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]); | |
1476 | return devlink_sb_port_pool_set(devlink_port, devlink_sb->index, | |
f2ad1a52 | 1477 | pool_index, threshold, info->extack); |
bf797471 JP |
1478 | } |
1479 | ||
1480 | static int | |
1481 | devlink_nl_sb_tc_pool_bind_fill(struct sk_buff *msg, struct devlink *devlink, | |
1482 | struct devlink_port *devlink_port, | |
1483 | struct devlink_sb *devlink_sb, u16 tc_index, | |
1484 | enum devlink_sb_pool_type pool_type, | |
1485 | enum devlink_command cmd, | |
1486 | u32 portid, u32 seq, int flags) | |
1487 | { | |
df38dafd | 1488 | const struct devlink_ops *ops = devlink->ops; |
bf797471 JP |
1489 | u16 pool_index; |
1490 | u32 threshold; | |
1491 | void *hdr; | |
1492 | int err; | |
1493 | ||
df38dafd JP |
1494 | err = ops->sb_tc_pool_bind_get(devlink_port, devlink_sb->index, |
1495 | tc_index, pool_type, | |
1496 | &pool_index, &threshold); | |
bf797471 JP |
1497 | if (err) |
1498 | return err; | |
1499 | ||
1500 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
1501 | if (!hdr) | |
1502 | return -EMSGSIZE; | |
1503 | ||
1504 | if (devlink_nl_put_handle(msg, devlink)) | |
1505 | goto nla_put_failure; | |
1506 | if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index)) | |
1507 | goto nla_put_failure; | |
1508 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index)) | |
1509 | goto nla_put_failure; | |
1510 | if (nla_put_u16(msg, DEVLINK_ATTR_SB_TC_INDEX, tc_index)) | |
1511 | goto nla_put_failure; | |
1512 | if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_type)) | |
1513 | goto nla_put_failure; | |
1514 | if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index)) | |
1515 | goto nla_put_failure; | |
1516 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold)) | |
1517 | goto nla_put_failure; | |
1518 | ||
df38dafd JP |
1519 | if (ops->sb_occ_tc_port_bind_get) { |
1520 | u32 cur; | |
1521 | u32 max; | |
1522 | ||
1523 | err = ops->sb_occ_tc_port_bind_get(devlink_port, | |
1524 | devlink_sb->index, | |
1525 | tc_index, pool_type, | |
1526 | &cur, &max); | |
1527 | if (err && err != -EOPNOTSUPP) | |
1528 | return err; | |
1529 | if (!err) { | |
1530 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur)) | |
1531 | goto nla_put_failure; | |
1532 | if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max)) | |
1533 | goto nla_put_failure; | |
1534 | } | |
1535 | } | |
1536 | ||
bf797471 JP |
1537 | genlmsg_end(msg, hdr); |
1538 | return 0; | |
1539 | ||
1540 | nla_put_failure: | |
1541 | genlmsg_cancel(msg, hdr); | |
1542 | return -EMSGSIZE; | |
1543 | } | |
1544 | ||
1545 | static int devlink_nl_cmd_sb_tc_pool_bind_get_doit(struct sk_buff *skb, | |
1546 | struct genl_info *info) | |
1547 | { | |
637989b5 | 1548 | struct devlink_port *devlink_port = info->user_ptr[1]; |
bf797471 | 1549 | struct devlink *devlink = devlink_port->devlink; |
637989b5 | 1550 | struct devlink_sb *devlink_sb; |
bf797471 JP |
1551 | struct sk_buff *msg; |
1552 | enum devlink_sb_pool_type pool_type; | |
1553 | u16 tc_index; | |
1554 | int err; | |
1555 | ||
637989b5 PP |
1556 | devlink_sb = devlink_sb_get_from_info(devlink, info); |
1557 | if (IS_ERR(devlink_sb)) | |
1558 | return PTR_ERR(devlink_sb); | |
1559 | ||
bf797471 JP |
1560 | err = devlink_sb_pool_type_get_from_info(info, &pool_type); |
1561 | if (err) | |
1562 | return err; | |
1563 | ||
1564 | err = devlink_sb_tc_index_get_from_info(devlink_sb, info, | |
1565 | pool_type, &tc_index); | |
1566 | if (err) | |
1567 | return err; | |
1568 | ||
be6fe1d8 | 1569 | if (!devlink->ops->sb_tc_pool_bind_get) |
bf797471 JP |
1570 | return -EOPNOTSUPP; |
1571 | ||
1572 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
1573 | if (!msg) | |
1574 | return -ENOMEM; | |
1575 | ||
1576 | err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink, devlink_port, | |
1577 | devlink_sb, tc_index, pool_type, | |
1578 | DEVLINK_CMD_SB_TC_POOL_BIND_NEW, | |
1579 | info->snd_portid, | |
1580 | info->snd_seq, 0); | |
1581 | if (err) { | |
1582 | nlmsg_free(msg); | |
1583 | return err; | |
1584 | } | |
1585 | ||
1586 | return genlmsg_reply(msg, info); | |
1587 | } | |
1588 | ||
1589 | static int __sb_tc_pool_bind_get_dumpit(struct sk_buff *msg, | |
1590 | int start, int *p_idx, | |
1591 | struct devlink *devlink, | |
1592 | struct devlink_sb *devlink_sb, | |
1593 | u32 portid, u32 seq) | |
1594 | { | |
1595 | struct devlink_port *devlink_port; | |
1596 | u16 tc_index; | |
1597 | int err; | |
1598 | ||
1599 | list_for_each_entry(devlink_port, &devlink->port_list, list) { | |
1600 | for (tc_index = 0; | |
1601 | tc_index < devlink_sb->ingress_tc_count; tc_index++) { | |
1602 | if (*p_idx < start) { | |
1603 | (*p_idx)++; | |
1604 | continue; | |
1605 | } | |
1606 | err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink, | |
1607 | devlink_port, | |
1608 | devlink_sb, | |
1609 | tc_index, | |
1610 | DEVLINK_SB_POOL_TYPE_INGRESS, | |
1611 | DEVLINK_CMD_SB_TC_POOL_BIND_NEW, | |
1612 | portid, seq, | |
1613 | NLM_F_MULTI); | |
1614 | if (err) | |
1615 | return err; | |
1616 | (*p_idx)++; | |
1617 | } | |
1618 | for (tc_index = 0; | |
1619 | tc_index < devlink_sb->egress_tc_count; tc_index++) { | |
1620 | if (*p_idx < start) { | |
1621 | (*p_idx)++; | |
1622 | continue; | |
1623 | } | |
1624 | err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink, | |
1625 | devlink_port, | |
1626 | devlink_sb, | |
1627 | tc_index, | |
1628 | DEVLINK_SB_POOL_TYPE_EGRESS, | |
1629 | DEVLINK_CMD_SB_TC_POOL_BIND_NEW, | |
1630 | portid, seq, | |
1631 | NLM_F_MULTI); | |
1632 | if (err) | |
1633 | return err; | |
1634 | (*p_idx)++; | |
1635 | } | |
1636 | } | |
1637 | return 0; | |
1638 | } | |
1639 | ||
1640 | static int | |
1641 | devlink_nl_cmd_sb_tc_pool_bind_get_dumpit(struct sk_buff *msg, | |
1642 | struct netlink_callback *cb) | |
1643 | { | |
1644 | struct devlink *devlink; | |
1645 | struct devlink_sb *devlink_sb; | |
1646 | int start = cb->args[0]; | |
1647 | int idx = 0; | |
c62c2cfb | 1648 | int err = 0; |
bf797471 JP |
1649 | |
1650 | mutex_lock(&devlink_mutex); | |
bf797471 JP |
1651 | list_for_each_entry(devlink, &devlink_list, list) { |
1652 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) || | |
be6fe1d8 | 1653 | !devlink->ops->sb_tc_pool_bind_get) |
bf797471 | 1654 | continue; |
2406e7e5 AS |
1655 | |
1656 | mutex_lock(&devlink->lock); | |
bf797471 JP |
1657 | list_for_each_entry(devlink_sb, &devlink->sb_list, list) { |
1658 | err = __sb_tc_pool_bind_get_dumpit(msg, start, &idx, | |
1659 | devlink, | |
1660 | devlink_sb, | |
1661 | NETLINK_CB(cb->skb).portid, | |
1662 | cb->nlh->nlmsg_seq); | |
82274d07 JK |
1663 | if (err == -EOPNOTSUPP) { |
1664 | err = 0; | |
1665 | } else if (err) { | |
2406e7e5 | 1666 | mutex_unlock(&devlink->lock); |
bf797471 | 1667 | goto out; |
2406e7e5 | 1668 | } |
bf797471 | 1669 | } |
2406e7e5 | 1670 | mutex_unlock(&devlink->lock); |
bf797471 JP |
1671 | } |
1672 | out: | |
bf797471 JP |
1673 | mutex_unlock(&devlink_mutex); |
1674 | ||
c62c2cfb JP |
1675 | if (err != -EMSGSIZE) |
1676 | return err; | |
1677 | ||
bf797471 JP |
1678 | cb->args[0] = idx; |
1679 | return msg->len; | |
1680 | } | |
1681 | ||
1682 | static int devlink_sb_tc_pool_bind_set(struct devlink_port *devlink_port, | |
1683 | unsigned int sb_index, u16 tc_index, | |
1684 | enum devlink_sb_pool_type pool_type, | |
f2ad1a52 IS |
1685 | u16 pool_index, u32 threshold, |
1686 | struct netlink_ext_ack *extack) | |
bf797471 JP |
1687 | |
1688 | { | |
1689 | const struct devlink_ops *ops = devlink_port->devlink->ops; | |
1690 | ||
be6fe1d8 | 1691 | if (ops->sb_tc_pool_bind_set) |
bf797471 JP |
1692 | return ops->sb_tc_pool_bind_set(devlink_port, sb_index, |
1693 | tc_index, pool_type, | |
f2ad1a52 | 1694 | pool_index, threshold, extack); |
bf797471 JP |
1695 | return -EOPNOTSUPP; |
1696 | } | |
1697 | ||
1698 | static int devlink_nl_cmd_sb_tc_pool_bind_set_doit(struct sk_buff *skb, | |
1699 | struct genl_info *info) | |
1700 | { | |
637989b5 PP |
1701 | struct devlink_port *devlink_port = info->user_ptr[1]; |
1702 | struct devlink *devlink = info->user_ptr[0]; | |
bf797471 | 1703 | enum devlink_sb_pool_type pool_type; |
637989b5 | 1704 | struct devlink_sb *devlink_sb; |
bf797471 JP |
1705 | u16 tc_index; |
1706 | u16 pool_index; | |
1707 | u32 threshold; | |
1708 | int err; | |
1709 | ||
637989b5 PP |
1710 | devlink_sb = devlink_sb_get_from_info(devlink, info); |
1711 | if (IS_ERR(devlink_sb)) | |
1712 | return PTR_ERR(devlink_sb); | |
1713 | ||
bf797471 JP |
1714 | err = devlink_sb_pool_type_get_from_info(info, &pool_type); |
1715 | if (err) | |
1716 | return err; | |
1717 | ||
1718 | err = devlink_sb_tc_index_get_from_info(devlink_sb, info, | |
1719 | pool_type, &tc_index); | |
1720 | if (err) | |
1721 | return err; | |
1722 | ||
1723 | err = devlink_sb_pool_index_get_from_info(devlink_sb, info, | |
1724 | &pool_index); | |
1725 | if (err) | |
1726 | return err; | |
1727 | ||
1728 | if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD]) | |
1729 | return -EINVAL; | |
1730 | ||
1731 | threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]); | |
1732 | return devlink_sb_tc_pool_bind_set(devlink_port, devlink_sb->index, | |
1733 | tc_index, pool_type, | |
f2ad1a52 | 1734 | pool_index, threshold, info->extack); |
bf797471 JP |
1735 | } |
1736 | ||
df38dafd JP |
1737 | static int devlink_nl_cmd_sb_occ_snapshot_doit(struct sk_buff *skb, |
1738 | struct genl_info *info) | |
1739 | { | |
1740 | struct devlink *devlink = info->user_ptr[0]; | |
df38dafd | 1741 | const struct devlink_ops *ops = devlink->ops; |
637989b5 PP |
1742 | struct devlink_sb *devlink_sb; |
1743 | ||
1744 | devlink_sb = devlink_sb_get_from_info(devlink, info); | |
1745 | if (IS_ERR(devlink_sb)) | |
1746 | return PTR_ERR(devlink_sb); | |
df38dafd | 1747 | |
be6fe1d8 | 1748 | if (ops->sb_occ_snapshot) |
df38dafd JP |
1749 | return ops->sb_occ_snapshot(devlink, devlink_sb->index); |
1750 | return -EOPNOTSUPP; | |
1751 | } | |
1752 | ||
1753 | static int devlink_nl_cmd_sb_occ_max_clear_doit(struct sk_buff *skb, | |
1754 | struct genl_info *info) | |
1755 | { | |
1756 | struct devlink *devlink = info->user_ptr[0]; | |
df38dafd | 1757 | const struct devlink_ops *ops = devlink->ops; |
637989b5 PP |
1758 | struct devlink_sb *devlink_sb; |
1759 | ||
1760 | devlink_sb = devlink_sb_get_from_info(devlink, info); | |
1761 | if (IS_ERR(devlink_sb)) | |
1762 | return PTR_ERR(devlink_sb); | |
df38dafd | 1763 | |
be6fe1d8 | 1764 | if (ops->sb_occ_max_clear) |
df38dafd JP |
1765 | return ops->sb_occ_max_clear(devlink, devlink_sb->index); |
1766 | return -EOPNOTSUPP; | |
1767 | } | |
1768 | ||
21e3d2dd JP |
1769 | static int devlink_nl_eswitch_fill(struct sk_buff *msg, struct devlink *devlink, |
1770 | enum devlink_command cmd, u32 portid, | |
1771 | u32 seq, int flags) | |
08f4b591 | 1772 | { |
59bfde01 | 1773 | const struct devlink_ops *ops = devlink->ops; |
98fdbea5 LR |
1774 | enum devlink_eswitch_encap_mode encap_mode; |
1775 | u8 inline_mode; | |
08f4b591 | 1776 | void *hdr; |
59bfde01 RD |
1777 | int err = 0; |
1778 | u16 mode; | |
08f4b591 OG |
1779 | |
1780 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
1781 | if (!hdr) | |
1782 | return -EMSGSIZE; | |
1783 | ||
59bfde01 RD |
1784 | err = devlink_nl_put_handle(msg, devlink); |
1785 | if (err) | |
1a6aa36b | 1786 | goto nla_put_failure; |
08f4b591 | 1787 | |
4456f61c JP |
1788 | if (ops->eswitch_mode_get) { |
1789 | err = ops->eswitch_mode_get(devlink, &mode); | |
1790 | if (err) | |
1791 | goto nla_put_failure; | |
1792 | err = nla_put_u16(msg, DEVLINK_ATTR_ESWITCH_MODE, mode); | |
1793 | if (err) | |
1794 | goto nla_put_failure; | |
1795 | } | |
59bfde01 RD |
1796 | |
1797 | if (ops->eswitch_inline_mode_get) { | |
1798 | err = ops->eswitch_inline_mode_get(devlink, &inline_mode); | |
1799 | if (err) | |
1a6aa36b | 1800 | goto nla_put_failure; |
59bfde01 RD |
1801 | err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_INLINE_MODE, |
1802 | inline_mode); | |
1803 | if (err) | |
1a6aa36b | 1804 | goto nla_put_failure; |
59bfde01 | 1805 | } |
08f4b591 | 1806 | |
f43e9b06 RD |
1807 | if (ops->eswitch_encap_mode_get) { |
1808 | err = ops->eswitch_encap_mode_get(devlink, &encap_mode); | |
1809 | if (err) | |
1810 | goto nla_put_failure; | |
1811 | err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_ENCAP_MODE, encap_mode); | |
1812 | if (err) | |
1813 | goto nla_put_failure; | |
1814 | } | |
1815 | ||
08f4b591 OG |
1816 | genlmsg_end(msg, hdr); |
1817 | return 0; | |
1818 | ||
1a6aa36b | 1819 | nla_put_failure: |
08f4b591 | 1820 | genlmsg_cancel(msg, hdr); |
59bfde01 | 1821 | return err; |
08f4b591 OG |
1822 | } |
1823 | ||
adf200f3 JP |
1824 | static int devlink_nl_cmd_eswitch_get_doit(struct sk_buff *skb, |
1825 | struct genl_info *info) | |
08f4b591 OG |
1826 | { |
1827 | struct devlink *devlink = info->user_ptr[0]; | |
08f4b591 | 1828 | struct sk_buff *msg; |
08f4b591 OG |
1829 | int err; |
1830 | ||
08f4b591 OG |
1831 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
1832 | if (!msg) | |
1833 | return -ENOMEM; | |
1834 | ||
21e3d2dd JP |
1835 | err = devlink_nl_eswitch_fill(msg, devlink, DEVLINK_CMD_ESWITCH_GET, |
1836 | info->snd_portid, info->snd_seq, 0); | |
08f4b591 OG |
1837 | |
1838 | if (err) { | |
1839 | nlmsg_free(msg); | |
1840 | return err; | |
1841 | } | |
1842 | ||
1843 | return genlmsg_reply(msg, info); | |
1844 | } | |
1845 | ||
adf200f3 JP |
1846 | static int devlink_nl_cmd_eswitch_set_doit(struct sk_buff *skb, |
1847 | struct genl_info *info) | |
08f4b591 OG |
1848 | { |
1849 | struct devlink *devlink = info->user_ptr[0]; | |
1850 | const struct devlink_ops *ops = devlink->ops; | |
98fdbea5 LR |
1851 | enum devlink_eswitch_encap_mode encap_mode; |
1852 | u8 inline_mode; | |
59bfde01 | 1853 | int err = 0; |
f43e9b06 | 1854 | u16 mode; |
08f4b591 | 1855 | |
59bfde01 RD |
1856 | if (info->attrs[DEVLINK_ATTR_ESWITCH_MODE]) { |
1857 | if (!ops->eswitch_mode_set) | |
1858 | return -EOPNOTSUPP; | |
1859 | mode = nla_get_u16(info->attrs[DEVLINK_ATTR_ESWITCH_MODE]); | |
db7ff19e | 1860 | err = ops->eswitch_mode_set(devlink, mode, info->extack); |
59bfde01 RD |
1861 | if (err) |
1862 | return err; | |
1863 | } | |
08f4b591 | 1864 | |
59bfde01 RD |
1865 | if (info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]) { |
1866 | if (!ops->eswitch_inline_mode_set) | |
1867 | return -EOPNOTSUPP; | |
1868 | inline_mode = nla_get_u8( | |
1869 | info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]); | |
db7ff19e EB |
1870 | err = ops->eswitch_inline_mode_set(devlink, inline_mode, |
1871 | info->extack); | |
59bfde01 RD |
1872 | if (err) |
1873 | return err; | |
1874 | } | |
f43e9b06 RD |
1875 | |
1876 | if (info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]) { | |
1877 | if (!ops->eswitch_encap_mode_set) | |
1878 | return -EOPNOTSUPP; | |
1879 | encap_mode = nla_get_u8(info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]); | |
db7ff19e EB |
1880 | err = ops->eswitch_encap_mode_set(devlink, encap_mode, |
1881 | info->extack); | |
f43e9b06 RD |
1882 | if (err) |
1883 | return err; | |
1884 | } | |
1885 | ||
1555d204 AS |
1886 | return 0; |
1887 | } | |
1888 | ||
1889 | int devlink_dpipe_match_put(struct sk_buff *skb, | |
1890 | struct devlink_dpipe_match *match) | |
1891 | { | |
1892 | struct devlink_dpipe_header *header = match->header; | |
1893 | struct devlink_dpipe_field *field = &header->fields[match->field_id]; | |
1894 | struct nlattr *match_attr; | |
1895 | ||
ae0be8de | 1896 | match_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_MATCH); |
1555d204 AS |
1897 | if (!match_attr) |
1898 | return -EMSGSIZE; | |
1899 | ||
1900 | if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_MATCH_TYPE, match->type) || | |
1901 | nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, match->header_index) || | |
1902 | nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) || | |
1903 | nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) || | |
1904 | nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global)) | |
1905 | goto nla_put_failure; | |
1906 | ||
1907 | nla_nest_end(skb, match_attr); | |
1908 | return 0; | |
1909 | ||
1910 | nla_put_failure: | |
1911 | nla_nest_cancel(skb, match_attr); | |
1912 | return -EMSGSIZE; | |
1913 | } | |
1914 | EXPORT_SYMBOL_GPL(devlink_dpipe_match_put); | |
1915 | ||
1916 | static int devlink_dpipe_matches_put(struct devlink_dpipe_table *table, | |
1917 | struct sk_buff *skb) | |
1918 | { | |
1919 | struct nlattr *matches_attr; | |
1920 | ||
ae0be8de MK |
1921 | matches_attr = nla_nest_start_noflag(skb, |
1922 | DEVLINK_ATTR_DPIPE_TABLE_MATCHES); | |
1555d204 AS |
1923 | if (!matches_attr) |
1924 | return -EMSGSIZE; | |
1925 | ||
1926 | if (table->table_ops->matches_dump(table->priv, skb)) | |
1927 | goto nla_put_failure; | |
1928 | ||
1929 | nla_nest_end(skb, matches_attr); | |
1930 | return 0; | |
1931 | ||
1932 | nla_put_failure: | |
1933 | nla_nest_cancel(skb, matches_attr); | |
1934 | return -EMSGSIZE; | |
1935 | } | |
1936 | ||
1937 | int devlink_dpipe_action_put(struct sk_buff *skb, | |
1938 | struct devlink_dpipe_action *action) | |
1939 | { | |
1940 | struct devlink_dpipe_header *header = action->header; | |
1941 | struct devlink_dpipe_field *field = &header->fields[action->field_id]; | |
1942 | struct nlattr *action_attr; | |
1943 | ||
ae0be8de | 1944 | action_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ACTION); |
1555d204 AS |
1945 | if (!action_attr) |
1946 | return -EMSGSIZE; | |
1947 | ||
1948 | if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_ACTION_TYPE, action->type) || | |
1949 | nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, action->header_index) || | |
1950 | nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) || | |
1951 | nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) || | |
1952 | nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global)) | |
1953 | goto nla_put_failure; | |
1954 | ||
1955 | nla_nest_end(skb, action_attr); | |
1956 | return 0; | |
1957 | ||
1958 | nla_put_failure: | |
1959 | nla_nest_cancel(skb, action_attr); | |
1960 | return -EMSGSIZE; | |
1961 | } | |
1962 | EXPORT_SYMBOL_GPL(devlink_dpipe_action_put); | |
1963 | ||
1964 | static int devlink_dpipe_actions_put(struct devlink_dpipe_table *table, | |
1965 | struct sk_buff *skb) | |
1966 | { | |
1967 | struct nlattr *actions_attr; | |
1968 | ||
ae0be8de MK |
1969 | actions_attr = nla_nest_start_noflag(skb, |
1970 | DEVLINK_ATTR_DPIPE_TABLE_ACTIONS); | |
1555d204 AS |
1971 | if (!actions_attr) |
1972 | return -EMSGSIZE; | |
1973 | ||
1974 | if (table->table_ops->actions_dump(table->priv, skb)) | |
1975 | goto nla_put_failure; | |
1976 | ||
1977 | nla_nest_end(skb, actions_attr); | |
1978 | return 0; | |
1979 | ||
1980 | nla_put_failure: | |
1981 | nla_nest_cancel(skb, actions_attr); | |
1982 | return -EMSGSIZE; | |
1983 | } | |
1984 | ||
1985 | static int devlink_dpipe_table_put(struct sk_buff *skb, | |
1986 | struct devlink_dpipe_table *table) | |
1987 | { | |
1988 | struct nlattr *table_attr; | |
ffd3cdcc | 1989 | u64 table_size; |
1555d204 | 1990 | |
ffd3cdcc | 1991 | table_size = table->table_ops->size_get(table->priv); |
ae0be8de | 1992 | table_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_TABLE); |
1555d204 AS |
1993 | if (!table_attr) |
1994 | return -EMSGSIZE; | |
1995 | ||
1996 | if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_TABLE_NAME, table->name) || | |
ffd3cdcc | 1997 | nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_SIZE, table_size, |
1555d204 AS |
1998 | DEVLINK_ATTR_PAD)) |
1999 | goto nla_put_failure; | |
2000 | if (nla_put_u8(skb, DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED, | |
2001 | table->counters_enabled)) | |
2002 | goto nla_put_failure; | |
2003 | ||
56dc7cd0 | 2004 | if (table->resource_valid) { |
3d18e4f1 AS |
2005 | if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_ID, |
2006 | table->resource_id, DEVLINK_ATTR_PAD) || | |
2007 | nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_UNITS, | |
2008 | table->resource_units, DEVLINK_ATTR_PAD)) | |
2009 | goto nla_put_failure; | |
56dc7cd0 | 2010 | } |
1555d204 AS |
2011 | if (devlink_dpipe_matches_put(table, skb)) |
2012 | goto nla_put_failure; | |
2013 | ||
2014 | if (devlink_dpipe_actions_put(table, skb)) | |
2015 | goto nla_put_failure; | |
2016 | ||
2017 | nla_nest_end(skb, table_attr); | |
2018 | return 0; | |
2019 | ||
2020 | nla_put_failure: | |
2021 | nla_nest_cancel(skb, table_attr); | |
2022 | return -EMSGSIZE; | |
2023 | } | |
2024 | ||
2025 | static int devlink_dpipe_send_and_alloc_skb(struct sk_buff **pskb, | |
2026 | struct genl_info *info) | |
2027 | { | |
2028 | int err; | |
2029 | ||
2030 | if (*pskb) { | |
2031 | err = genlmsg_reply(*pskb, info); | |
2032 | if (err) | |
2033 | return err; | |
2034 | } | |
2035 | *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
2036 | if (!*pskb) | |
2037 | return -ENOMEM; | |
2038 | return 0; | |
2039 | } | |
2040 | ||
2041 | static int devlink_dpipe_tables_fill(struct genl_info *info, | |
2042 | enum devlink_command cmd, int flags, | |
2043 | struct list_head *dpipe_tables, | |
2044 | const char *table_name) | |
2045 | { | |
2046 | struct devlink *devlink = info->user_ptr[0]; | |
2047 | struct devlink_dpipe_table *table; | |
2048 | struct nlattr *tables_attr; | |
2049 | struct sk_buff *skb = NULL; | |
2050 | struct nlmsghdr *nlh; | |
2051 | bool incomplete; | |
2052 | void *hdr; | |
2053 | int i; | |
2054 | int err; | |
2055 | ||
2056 | table = list_first_entry(dpipe_tables, | |
2057 | struct devlink_dpipe_table, list); | |
2058 | start_again: | |
2059 | err = devlink_dpipe_send_and_alloc_skb(&skb, info); | |
2060 | if (err) | |
2061 | return err; | |
2062 | ||
2063 | hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq, | |
2064 | &devlink_nl_family, NLM_F_MULTI, cmd); | |
6044bd4a HY |
2065 | if (!hdr) { |
2066 | nlmsg_free(skb); | |
1555d204 | 2067 | return -EMSGSIZE; |
6044bd4a | 2068 | } |
1555d204 AS |
2069 | |
2070 | if (devlink_nl_put_handle(skb, devlink)) | |
2071 | goto nla_put_failure; | |
ae0be8de | 2072 | tables_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_TABLES); |
1555d204 AS |
2073 | if (!tables_attr) |
2074 | goto nla_put_failure; | |
2075 | ||
2076 | i = 0; | |
2077 | incomplete = false; | |
2078 | list_for_each_entry_from(table, dpipe_tables, list) { | |
2079 | if (!table_name) { | |
2080 | err = devlink_dpipe_table_put(skb, table); | |
2081 | if (err) { | |
2082 | if (!i) | |
2083 | goto err_table_put; | |
2084 | incomplete = true; | |
2085 | break; | |
2086 | } | |
2087 | } else { | |
2088 | if (!strcmp(table->name, table_name)) { | |
2089 | err = devlink_dpipe_table_put(skb, table); | |
2090 | if (err) | |
2091 | break; | |
2092 | } | |
2093 | } | |
2094 | i++; | |
2095 | } | |
2096 | ||
2097 | nla_nest_end(skb, tables_attr); | |
2098 | genlmsg_end(skb, hdr); | |
2099 | if (incomplete) | |
2100 | goto start_again; | |
2101 | ||
2102 | send_done: | |
2103 | nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq, | |
2104 | NLMSG_DONE, 0, flags | NLM_F_MULTI); | |
2105 | if (!nlh) { | |
2106 | err = devlink_dpipe_send_and_alloc_skb(&skb, info); | |
2107 | if (err) | |
7fe4d6dc | 2108 | return err; |
1555d204 AS |
2109 | goto send_done; |
2110 | } | |
2111 | ||
2112 | return genlmsg_reply(skb, info); | |
2113 | ||
2114 | nla_put_failure: | |
2115 | err = -EMSGSIZE; | |
2116 | err_table_put: | |
1555d204 AS |
2117 | nlmsg_free(skb); |
2118 | return err; | |
2119 | } | |
2120 | ||
2121 | static int devlink_nl_cmd_dpipe_table_get(struct sk_buff *skb, | |
2122 | struct genl_info *info) | |
2123 | { | |
2124 | struct devlink *devlink = info->user_ptr[0]; | |
2125 | const char *table_name = NULL; | |
2126 | ||
2127 | if (info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]) | |
2128 | table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]); | |
2129 | ||
2130 | return devlink_dpipe_tables_fill(info, DEVLINK_CMD_DPIPE_TABLE_GET, 0, | |
2131 | &devlink->dpipe_table_list, | |
2132 | table_name); | |
2133 | } | |
2134 | ||
2135 | static int devlink_dpipe_value_put(struct sk_buff *skb, | |
2136 | struct devlink_dpipe_value *value) | |
2137 | { | |
2138 | if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE, | |
2139 | value->value_size, value->value)) | |
2140 | return -EMSGSIZE; | |
2141 | if (value->mask) | |
2142 | if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE_MASK, | |
2143 | value->value_size, value->mask)) | |
2144 | return -EMSGSIZE; | |
2145 | if (value->mapping_valid) | |
2146 | if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_VALUE_MAPPING, | |
2147 | value->mapping_value)) | |
2148 | return -EMSGSIZE; | |
2149 | return 0; | |
2150 | } | |
2151 | ||
2152 | static int devlink_dpipe_action_value_put(struct sk_buff *skb, | |
2153 | struct devlink_dpipe_value *value) | |
2154 | { | |
2155 | if (!value->action) | |
2156 | return -EINVAL; | |
2157 | if (devlink_dpipe_action_put(skb, value->action)) | |
2158 | return -EMSGSIZE; | |
2159 | if (devlink_dpipe_value_put(skb, value)) | |
2160 | return -EMSGSIZE; | |
2161 | return 0; | |
2162 | } | |
2163 | ||
2164 | static int devlink_dpipe_action_values_put(struct sk_buff *skb, | |
2165 | struct devlink_dpipe_value *values, | |
2166 | unsigned int values_count) | |
2167 | { | |
2168 | struct nlattr *action_attr; | |
2169 | int i; | |
2170 | int err; | |
2171 | ||
2172 | for (i = 0; i < values_count; i++) { | |
ae0be8de MK |
2173 | action_attr = nla_nest_start_noflag(skb, |
2174 | DEVLINK_ATTR_DPIPE_ACTION_VALUE); | |
1555d204 AS |
2175 | if (!action_attr) |
2176 | return -EMSGSIZE; | |
2177 | err = devlink_dpipe_action_value_put(skb, &values[i]); | |
2178 | if (err) | |
2179 | goto err_action_value_put; | |
2180 | nla_nest_end(skb, action_attr); | |
2181 | } | |
2182 | return 0; | |
2183 | ||
2184 | err_action_value_put: | |
2185 | nla_nest_cancel(skb, action_attr); | |
2186 | return err; | |
2187 | } | |
2188 | ||
2189 | static int devlink_dpipe_match_value_put(struct sk_buff *skb, | |
2190 | struct devlink_dpipe_value *value) | |
2191 | { | |
2192 | if (!value->match) | |
2193 | return -EINVAL; | |
2194 | if (devlink_dpipe_match_put(skb, value->match)) | |
2195 | return -EMSGSIZE; | |
2196 | if (devlink_dpipe_value_put(skb, value)) | |
2197 | return -EMSGSIZE; | |
2198 | return 0; | |
2199 | } | |
2200 | ||
2201 | static int devlink_dpipe_match_values_put(struct sk_buff *skb, | |
2202 | struct devlink_dpipe_value *values, | |
2203 | unsigned int values_count) | |
2204 | { | |
2205 | struct nlattr *match_attr; | |
2206 | int i; | |
2207 | int err; | |
2208 | ||
2209 | for (i = 0; i < values_count; i++) { | |
ae0be8de MK |
2210 | match_attr = nla_nest_start_noflag(skb, |
2211 | DEVLINK_ATTR_DPIPE_MATCH_VALUE); | |
1555d204 AS |
2212 | if (!match_attr) |
2213 | return -EMSGSIZE; | |
2214 | err = devlink_dpipe_match_value_put(skb, &values[i]); | |
2215 | if (err) | |
2216 | goto err_match_value_put; | |
2217 | nla_nest_end(skb, match_attr); | |
2218 | } | |
2219 | return 0; | |
2220 | ||
2221 | err_match_value_put: | |
2222 | nla_nest_cancel(skb, match_attr); | |
2223 | return err; | |
2224 | } | |
2225 | ||
2226 | static int devlink_dpipe_entry_put(struct sk_buff *skb, | |
2227 | struct devlink_dpipe_entry *entry) | |
2228 | { | |
2229 | struct nlattr *entry_attr, *matches_attr, *actions_attr; | |
2230 | int err; | |
2231 | ||
ae0be8de | 2232 | entry_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ENTRY); |
1555d204 AS |
2233 | if (!entry_attr) |
2234 | return -EMSGSIZE; | |
2235 | ||
2236 | if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_INDEX, entry->index, | |
2237 | DEVLINK_ATTR_PAD)) | |
2238 | goto nla_put_failure; | |
2239 | if (entry->counter_valid) | |
2240 | if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_COUNTER, | |
2241 | entry->counter, DEVLINK_ATTR_PAD)) | |
2242 | goto nla_put_failure; | |
2243 | ||
ae0be8de MK |
2244 | matches_attr = nla_nest_start_noflag(skb, |
2245 | DEVLINK_ATTR_DPIPE_ENTRY_MATCH_VALUES); | |
1555d204 AS |
2246 | if (!matches_attr) |
2247 | goto nla_put_failure; | |
2248 | ||
2249 | err = devlink_dpipe_match_values_put(skb, entry->match_values, | |
2250 | entry->match_values_count); | |
2251 | if (err) { | |
2252 | nla_nest_cancel(skb, matches_attr); | |
2253 | goto err_match_values_put; | |
2254 | } | |
2255 | nla_nest_end(skb, matches_attr); | |
2256 | ||
ae0be8de MK |
2257 | actions_attr = nla_nest_start_noflag(skb, |
2258 | DEVLINK_ATTR_DPIPE_ENTRY_ACTION_VALUES); | |
1555d204 AS |
2259 | if (!actions_attr) |
2260 | goto nla_put_failure; | |
2261 | ||
2262 | err = devlink_dpipe_action_values_put(skb, entry->action_values, | |
2263 | entry->action_values_count); | |
2264 | if (err) { | |
2265 | nla_nest_cancel(skb, actions_attr); | |
2266 | goto err_action_values_put; | |
2267 | } | |
2268 | nla_nest_end(skb, actions_attr); | |
59bfde01 | 2269 | |
1555d204 | 2270 | nla_nest_end(skb, entry_attr); |
59bfde01 | 2271 | return 0; |
1555d204 AS |
2272 | |
2273 | nla_put_failure: | |
2274 | err = -EMSGSIZE; | |
2275 | err_match_values_put: | |
2276 | err_action_values_put: | |
2277 | nla_nest_cancel(skb, entry_attr); | |
2278 | return err; | |
2279 | } | |
2280 | ||
2281 | static struct devlink_dpipe_table * | |
2282 | devlink_dpipe_table_find(struct list_head *dpipe_tables, | |
2eb51c75 | 2283 | const char *table_name, struct devlink *devlink) |
1555d204 AS |
2284 | { |
2285 | struct devlink_dpipe_table *table; | |
2eb51c75 MB |
2286 | list_for_each_entry_rcu(table, dpipe_tables, list, |
2287 | lockdep_is_held(&devlink->lock)) { | |
1555d204 AS |
2288 | if (!strcmp(table->name, table_name)) |
2289 | return table; | |
2290 | } | |
2291 | return NULL; | |
2292 | } | |
2293 | ||
2294 | int devlink_dpipe_entry_ctx_prepare(struct devlink_dpipe_dump_ctx *dump_ctx) | |
2295 | { | |
2296 | struct devlink *devlink; | |
2297 | int err; | |
2298 | ||
2299 | err = devlink_dpipe_send_and_alloc_skb(&dump_ctx->skb, | |
2300 | dump_ctx->info); | |
2301 | if (err) | |
2302 | return err; | |
2303 | ||
2304 | dump_ctx->hdr = genlmsg_put(dump_ctx->skb, | |
2305 | dump_ctx->info->snd_portid, | |
2306 | dump_ctx->info->snd_seq, | |
2307 | &devlink_nl_family, NLM_F_MULTI, | |
2308 | dump_ctx->cmd); | |
2309 | if (!dump_ctx->hdr) | |
2310 | goto nla_put_failure; | |
2311 | ||
2312 | devlink = dump_ctx->info->user_ptr[0]; | |
2313 | if (devlink_nl_put_handle(dump_ctx->skb, devlink)) | |
2314 | goto nla_put_failure; | |
ae0be8de MK |
2315 | dump_ctx->nest = nla_nest_start_noflag(dump_ctx->skb, |
2316 | DEVLINK_ATTR_DPIPE_ENTRIES); | |
1555d204 AS |
2317 | if (!dump_ctx->nest) |
2318 | goto nla_put_failure; | |
2319 | return 0; | |
2320 | ||
2321 | nla_put_failure: | |
1555d204 AS |
2322 | nlmsg_free(dump_ctx->skb); |
2323 | return -EMSGSIZE; | |
2324 | } | |
2325 | EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_prepare); | |
2326 | ||
2327 | int devlink_dpipe_entry_ctx_append(struct devlink_dpipe_dump_ctx *dump_ctx, | |
2328 | struct devlink_dpipe_entry *entry) | |
2329 | { | |
2330 | return devlink_dpipe_entry_put(dump_ctx->skb, entry); | |
2331 | } | |
2332 | EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_append); | |
2333 | ||
2334 | int devlink_dpipe_entry_ctx_close(struct devlink_dpipe_dump_ctx *dump_ctx) | |
2335 | { | |
2336 | nla_nest_end(dump_ctx->skb, dump_ctx->nest); | |
2337 | genlmsg_end(dump_ctx->skb, dump_ctx->hdr); | |
2338 | return 0; | |
2339 | } | |
2340 | EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_close); | |
2341 | ||
35807324 AS |
2342 | void devlink_dpipe_entry_clear(struct devlink_dpipe_entry *entry) |
2343 | ||
2344 | { | |
2345 | unsigned int value_count, value_index; | |
2346 | struct devlink_dpipe_value *value; | |
2347 | ||
2348 | value = entry->action_values; | |
2349 | value_count = entry->action_values_count; | |
2350 | for (value_index = 0; value_index < value_count; value_index++) { | |
2351 | kfree(value[value_index].value); | |
2352 | kfree(value[value_index].mask); | |
2353 | } | |
2354 | ||
2355 | value = entry->match_values; | |
2356 | value_count = entry->match_values_count; | |
2357 | for (value_index = 0; value_index < value_count; value_index++) { | |
2358 | kfree(value[value_index].value); | |
2359 | kfree(value[value_index].mask); | |
2360 | } | |
2361 | } | |
2362 | EXPORT_SYMBOL(devlink_dpipe_entry_clear); | |
2363 | ||
1555d204 AS |
2364 | static int devlink_dpipe_entries_fill(struct genl_info *info, |
2365 | enum devlink_command cmd, int flags, | |
2366 | struct devlink_dpipe_table *table) | |
2367 | { | |
2368 | struct devlink_dpipe_dump_ctx dump_ctx; | |
2369 | struct nlmsghdr *nlh; | |
2370 | int err; | |
2371 | ||
2372 | dump_ctx.skb = NULL; | |
2373 | dump_ctx.cmd = cmd; | |
2374 | dump_ctx.info = info; | |
2375 | ||
2376 | err = table->table_ops->entries_dump(table->priv, | |
2377 | table->counters_enabled, | |
2378 | &dump_ctx); | |
2379 | if (err) | |
7fe4d6dc | 2380 | return err; |
1555d204 AS |
2381 | |
2382 | send_done: | |
2383 | nlh = nlmsg_put(dump_ctx.skb, info->snd_portid, info->snd_seq, | |
2384 | NLMSG_DONE, 0, flags | NLM_F_MULTI); | |
2385 | if (!nlh) { | |
2386 | err = devlink_dpipe_send_and_alloc_skb(&dump_ctx.skb, info); | |
2387 | if (err) | |
7fe4d6dc | 2388 | return err; |
1555d204 AS |
2389 | goto send_done; |
2390 | } | |
2391 | return genlmsg_reply(dump_ctx.skb, info); | |
1555d204 AS |
2392 | } |
2393 | ||
2394 | static int devlink_nl_cmd_dpipe_entries_get(struct sk_buff *skb, | |
2395 | struct genl_info *info) | |
2396 | { | |
2397 | struct devlink *devlink = info->user_ptr[0]; | |
2398 | struct devlink_dpipe_table *table; | |
2399 | const char *table_name; | |
2400 | ||
2401 | if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]) | |
2402 | return -EINVAL; | |
2403 | ||
2404 | table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]); | |
2405 | table = devlink_dpipe_table_find(&devlink->dpipe_table_list, | |
2eb51c75 | 2406 | table_name, devlink); |
1555d204 AS |
2407 | if (!table) |
2408 | return -EINVAL; | |
2409 | ||
2410 | if (!table->table_ops->entries_dump) | |
2411 | return -EINVAL; | |
2412 | ||
2413 | return devlink_dpipe_entries_fill(info, DEVLINK_CMD_DPIPE_ENTRIES_GET, | |
2414 | 0, table); | |
2415 | } | |
2416 | ||
2417 | static int devlink_dpipe_fields_put(struct sk_buff *skb, | |
2418 | const struct devlink_dpipe_header *header) | |
2419 | { | |
2420 | struct devlink_dpipe_field *field; | |
2421 | struct nlattr *field_attr; | |
2422 | int i; | |
2423 | ||
2424 | for (i = 0; i < header->fields_count; i++) { | |
2425 | field = &header->fields[i]; | |
ae0be8de MK |
2426 | field_attr = nla_nest_start_noflag(skb, |
2427 | DEVLINK_ATTR_DPIPE_FIELD); | |
1555d204 AS |
2428 | if (!field_attr) |
2429 | return -EMSGSIZE; | |
2430 | if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_FIELD_NAME, field->name) || | |
2431 | nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) || | |
2432 | nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_BITWIDTH, field->bitwidth) || | |
2433 | nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_MAPPING_TYPE, field->mapping_type)) | |
2434 | goto nla_put_failure; | |
2435 | nla_nest_end(skb, field_attr); | |
2436 | } | |
2437 | return 0; | |
2438 | ||
2439 | nla_put_failure: | |
2440 | nla_nest_cancel(skb, field_attr); | |
2441 | return -EMSGSIZE; | |
2442 | } | |
2443 | ||
2444 | static int devlink_dpipe_header_put(struct sk_buff *skb, | |
2445 | struct devlink_dpipe_header *header) | |
2446 | { | |
2447 | struct nlattr *fields_attr, *header_attr; | |
2448 | int err; | |
2449 | ||
ae0be8de | 2450 | header_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_HEADER); |
cb6bf9cf | 2451 | if (!header_attr) |
1555d204 AS |
2452 | return -EMSGSIZE; |
2453 | ||
2454 | if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_HEADER_NAME, header->name) || | |
2455 | nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) || | |
2456 | nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global)) | |
2457 | goto nla_put_failure; | |
2458 | ||
ae0be8de MK |
2459 | fields_attr = nla_nest_start_noflag(skb, |
2460 | DEVLINK_ATTR_DPIPE_HEADER_FIELDS); | |
1555d204 AS |
2461 | if (!fields_attr) |
2462 | goto nla_put_failure; | |
2463 | ||
2464 | err = devlink_dpipe_fields_put(skb, header); | |
2465 | if (err) { | |
2466 | nla_nest_cancel(skb, fields_attr); | |
2467 | goto nla_put_failure; | |
2468 | } | |
2469 | nla_nest_end(skb, fields_attr); | |
2470 | nla_nest_end(skb, header_attr); | |
2471 | return 0; | |
2472 | ||
2473 | nla_put_failure: | |
2474 | err = -EMSGSIZE; | |
2475 | nla_nest_cancel(skb, header_attr); | |
2476 | return err; | |
2477 | } | |
2478 | ||
2479 | static int devlink_dpipe_headers_fill(struct genl_info *info, | |
2480 | enum devlink_command cmd, int flags, | |
2481 | struct devlink_dpipe_headers * | |
2482 | dpipe_headers) | |
2483 | { | |
2484 | struct devlink *devlink = info->user_ptr[0]; | |
2485 | struct nlattr *headers_attr; | |
2486 | struct sk_buff *skb = NULL; | |
2487 | struct nlmsghdr *nlh; | |
2488 | void *hdr; | |
2489 | int i, j; | |
2490 | int err; | |
2491 | ||
2492 | i = 0; | |
2493 | start_again: | |
2494 | err = devlink_dpipe_send_and_alloc_skb(&skb, info); | |
2495 | if (err) | |
2496 | return err; | |
2497 | ||
2498 | hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq, | |
2499 | &devlink_nl_family, NLM_F_MULTI, cmd); | |
6044bd4a HY |
2500 | if (!hdr) { |
2501 | nlmsg_free(skb); | |
1555d204 | 2502 | return -EMSGSIZE; |
6044bd4a | 2503 | } |
1555d204 AS |
2504 | |
2505 | if (devlink_nl_put_handle(skb, devlink)) | |
2506 | goto nla_put_failure; | |
ae0be8de | 2507 | headers_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_HEADERS); |
1555d204 AS |
2508 | if (!headers_attr) |
2509 | goto nla_put_failure; | |
2510 | ||
2511 | j = 0; | |
2512 | for (; i < dpipe_headers->headers_count; i++) { | |
2513 | err = devlink_dpipe_header_put(skb, dpipe_headers->headers[i]); | |
2514 | if (err) { | |
2515 | if (!j) | |
2516 | goto err_table_put; | |
2517 | break; | |
2518 | } | |
2519 | j++; | |
2520 | } | |
2521 | nla_nest_end(skb, headers_attr); | |
2522 | genlmsg_end(skb, hdr); | |
2523 | if (i != dpipe_headers->headers_count) | |
2524 | goto start_again; | |
2525 | ||
2526 | send_done: | |
2527 | nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq, | |
2528 | NLMSG_DONE, 0, flags | NLM_F_MULTI); | |
2529 | if (!nlh) { | |
2530 | err = devlink_dpipe_send_and_alloc_skb(&skb, info); | |
2531 | if (err) | |
7fe4d6dc | 2532 | return err; |
1555d204 AS |
2533 | goto send_done; |
2534 | } | |
2535 | return genlmsg_reply(skb, info); | |
2536 | ||
2537 | nla_put_failure: | |
2538 | err = -EMSGSIZE; | |
2539 | err_table_put: | |
1555d204 AS |
2540 | nlmsg_free(skb); |
2541 | return err; | |
2542 | } | |
2543 | ||
2544 | static int devlink_nl_cmd_dpipe_headers_get(struct sk_buff *skb, | |
2545 | struct genl_info *info) | |
2546 | { | |
2547 | struct devlink *devlink = info->user_ptr[0]; | |
2548 | ||
2549 | if (!devlink->dpipe_headers) | |
2550 | return -EOPNOTSUPP; | |
2551 | return devlink_dpipe_headers_fill(info, DEVLINK_CMD_DPIPE_HEADERS_GET, | |
2552 | 0, devlink->dpipe_headers); | |
2553 | } | |
2554 | ||
2555 | static int devlink_dpipe_table_counters_set(struct devlink *devlink, | |
2556 | const char *table_name, | |
2557 | bool enable) | |
2558 | { | |
2559 | struct devlink_dpipe_table *table; | |
2560 | ||
2561 | table = devlink_dpipe_table_find(&devlink->dpipe_table_list, | |
2eb51c75 | 2562 | table_name, devlink); |
1555d204 AS |
2563 | if (!table) |
2564 | return -EINVAL; | |
2565 | ||
2566 | if (table->counter_control_extern) | |
2567 | return -EOPNOTSUPP; | |
2568 | ||
2569 | if (!(table->counters_enabled ^ enable)) | |
2570 | return 0; | |
2571 | ||
2572 | table->counters_enabled = enable; | |
2573 | if (table->table_ops->counters_set_update) | |
2574 | table->table_ops->counters_set_update(table->priv, enable); | |
2575 | return 0; | |
2576 | } | |
2577 | ||
2578 | static int devlink_nl_cmd_dpipe_table_counters_set(struct sk_buff *skb, | |
2579 | struct genl_info *info) | |
2580 | { | |
2581 | struct devlink *devlink = info->user_ptr[0]; | |
2582 | const char *table_name; | |
2583 | bool counters_enable; | |
2584 | ||
2585 | if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME] || | |
2586 | !info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED]) | |
2587 | return -EINVAL; | |
2588 | ||
2589 | table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]); | |
2590 | counters_enable = !!nla_get_u8(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED]); | |
2591 | ||
2592 | return devlink_dpipe_table_counters_set(devlink, table_name, | |
2593 | counters_enable); | |
08f4b591 OG |
2594 | } |
2595 | ||
43dd7512 | 2596 | static struct devlink_resource * |
d9f9b9a4 AS |
2597 | devlink_resource_find(struct devlink *devlink, |
2598 | struct devlink_resource *resource, u64 resource_id) | |
2599 | { | |
2600 | struct list_head *resource_list; | |
2601 | ||
2602 | if (resource) | |
2603 | resource_list = &resource->resource_list; | |
2604 | else | |
2605 | resource_list = &devlink->resource_list; | |
2606 | ||
2607 | list_for_each_entry(resource, resource_list, list) { | |
2608 | struct devlink_resource *child_resource; | |
2609 | ||
2610 | if (resource->id == resource_id) | |
2611 | return resource; | |
2612 | ||
2613 | child_resource = devlink_resource_find(devlink, resource, | |
2614 | resource_id); | |
2615 | if (child_resource) | |
2616 | return child_resource; | |
2617 | } | |
2618 | return NULL; | |
2619 | } | |
2620 | ||
43dd7512 WY |
2621 | static void |
2622 | devlink_resource_validate_children(struct devlink_resource *resource) | |
d9f9b9a4 AS |
2623 | { |
2624 | struct devlink_resource *child_resource; | |
2625 | bool size_valid = true; | |
2626 | u64 parts_size = 0; | |
2627 | ||
2628 | if (list_empty(&resource->resource_list)) | |
2629 | goto out; | |
2630 | ||
2631 | list_for_each_entry(child_resource, &resource->resource_list, list) | |
2632 | parts_size += child_resource->size_new; | |
2633 | ||
b9d17175 | 2634 | if (parts_size > resource->size_new) |
d9f9b9a4 AS |
2635 | size_valid = false; |
2636 | out: | |
2637 | resource->size_valid = size_valid; | |
2638 | } | |
2639 | ||
cc944ead AS |
2640 | static int |
2641 | devlink_resource_validate_size(struct devlink_resource *resource, u64 size, | |
2642 | struct netlink_ext_ack *extack) | |
2643 | { | |
2644 | u64 reminder; | |
2645 | int err = 0; | |
2646 | ||
0f3e9c97 | 2647 | if (size > resource->size_params.size_max) { |
cc944ead AS |
2648 | NL_SET_ERR_MSG_MOD(extack, "Size larger than maximum"); |
2649 | err = -EINVAL; | |
2650 | } | |
2651 | ||
0f3e9c97 | 2652 | if (size < resource->size_params.size_min) { |
cc944ead AS |
2653 | NL_SET_ERR_MSG_MOD(extack, "Size smaller than minimum"); |
2654 | err = -EINVAL; | |
2655 | } | |
2656 | ||
0f3e9c97 | 2657 | div64_u64_rem(size, resource->size_params.size_granularity, &reminder); |
cc944ead AS |
2658 | if (reminder) { |
2659 | NL_SET_ERR_MSG_MOD(extack, "Wrong granularity"); | |
2660 | err = -EINVAL; | |
2661 | } | |
2662 | ||
2663 | return err; | |
2664 | } | |
2665 | ||
d9f9b9a4 AS |
2666 | static int devlink_nl_cmd_resource_set(struct sk_buff *skb, |
2667 | struct genl_info *info) | |
2668 | { | |
2669 | struct devlink *devlink = info->user_ptr[0]; | |
2670 | struct devlink_resource *resource; | |
2671 | u64 resource_id; | |
2672 | u64 size; | |
2673 | int err; | |
2674 | ||
2675 | if (!info->attrs[DEVLINK_ATTR_RESOURCE_ID] || | |
2676 | !info->attrs[DEVLINK_ATTR_RESOURCE_SIZE]) | |
2677 | return -EINVAL; | |
2678 | resource_id = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_ID]); | |
2679 | ||
2680 | resource = devlink_resource_find(devlink, NULL, resource_id); | |
2681 | if (!resource) | |
2682 | return -EINVAL; | |
2683 | ||
d9f9b9a4 | 2684 | size = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_SIZE]); |
cc944ead | 2685 | err = devlink_resource_validate_size(resource, size, info->extack); |
d9f9b9a4 AS |
2686 | if (err) |
2687 | return err; | |
2688 | ||
2689 | resource->size_new = size; | |
2690 | devlink_resource_validate_children(resource); | |
2691 | if (resource->parent) | |
2692 | devlink_resource_validate_children(resource->parent); | |
2693 | return 0; | |
2694 | } | |
2695 | ||
3d18e4f1 | 2696 | static int |
d9f9b9a4 AS |
2697 | devlink_resource_size_params_put(struct devlink_resource *resource, |
2698 | struct sk_buff *skb) | |
2699 | { | |
2700 | struct devlink_resource_size_params *size_params; | |
2701 | ||
77d27096 | 2702 | size_params = &resource->size_params; |
3d18e4f1 AS |
2703 | if (nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_GRAN, |
2704 | size_params->size_granularity, DEVLINK_ATTR_PAD) || | |
2705 | nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MAX, | |
2706 | size_params->size_max, DEVLINK_ATTR_PAD) || | |
2707 | nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MIN, | |
2708 | size_params->size_min, DEVLINK_ATTR_PAD) || | |
2709 | nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_UNIT, size_params->unit)) | |
2710 | return -EMSGSIZE; | |
2711 | return 0; | |
d9f9b9a4 AS |
2712 | } |
2713 | ||
fc56be47 JP |
2714 | static int devlink_resource_occ_put(struct devlink_resource *resource, |
2715 | struct sk_buff *skb) | |
2716 | { | |
2717 | if (!resource->occ_get) | |
2718 | return 0; | |
2719 | return nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_OCC, | |
2720 | resource->occ_get(resource->occ_get_priv), | |
2721 | DEVLINK_ATTR_PAD); | |
2722 | } | |
2723 | ||
d9f9b9a4 AS |
2724 | static int devlink_resource_put(struct devlink *devlink, struct sk_buff *skb, |
2725 | struct devlink_resource *resource) | |
2726 | { | |
2727 | struct devlink_resource *child_resource; | |
2728 | struct nlattr *child_resource_attr; | |
2729 | struct nlattr *resource_attr; | |
2730 | ||
ae0be8de | 2731 | resource_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_RESOURCE); |
d9f9b9a4 AS |
2732 | if (!resource_attr) |
2733 | return -EMSGSIZE; | |
2734 | ||
2735 | if (nla_put_string(skb, DEVLINK_ATTR_RESOURCE_NAME, resource->name) || | |
2736 | nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE, resource->size, | |
2737 | DEVLINK_ATTR_PAD) || | |
2738 | nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_ID, resource->id, | |
2739 | DEVLINK_ATTR_PAD)) | |
2740 | goto nla_put_failure; | |
2741 | if (resource->size != resource->size_new) | |
2742 | nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_NEW, | |
2743 | resource->size_new, DEVLINK_ATTR_PAD); | |
fc56be47 JP |
2744 | if (devlink_resource_occ_put(resource, skb)) |
2745 | goto nla_put_failure; | |
3d18e4f1 AS |
2746 | if (devlink_resource_size_params_put(resource, skb)) |
2747 | goto nla_put_failure; | |
d9f9b9a4 AS |
2748 | if (list_empty(&resource->resource_list)) |
2749 | goto out; | |
2750 | ||
2751 | if (nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_SIZE_VALID, | |
2752 | resource->size_valid)) | |
2753 | goto nla_put_failure; | |
2754 | ||
ae0be8de MK |
2755 | child_resource_attr = nla_nest_start_noflag(skb, |
2756 | DEVLINK_ATTR_RESOURCE_LIST); | |
d9f9b9a4 AS |
2757 | if (!child_resource_attr) |
2758 | goto nla_put_failure; | |
2759 | ||
2760 | list_for_each_entry(child_resource, &resource->resource_list, list) { | |
2761 | if (devlink_resource_put(devlink, skb, child_resource)) | |
2762 | goto resource_put_failure; | |
2763 | } | |
2764 | ||
2765 | nla_nest_end(skb, child_resource_attr); | |
2766 | out: | |
2767 | nla_nest_end(skb, resource_attr); | |
2768 | return 0; | |
2769 | ||
2770 | resource_put_failure: | |
2771 | nla_nest_cancel(skb, child_resource_attr); | |
2772 | nla_put_failure: | |
2773 | nla_nest_cancel(skb, resource_attr); | |
2774 | return -EMSGSIZE; | |
2775 | } | |
2776 | ||
2777 | static int devlink_resource_fill(struct genl_info *info, | |
2778 | enum devlink_command cmd, int flags) | |
2779 | { | |
2780 | struct devlink *devlink = info->user_ptr[0]; | |
2781 | struct devlink_resource *resource; | |
2782 | struct nlattr *resources_attr; | |
2783 | struct sk_buff *skb = NULL; | |
2784 | struct nlmsghdr *nlh; | |
2785 | bool incomplete; | |
2786 | void *hdr; | |
2787 | int i; | |
2788 | int err; | |
2789 | ||
2790 | resource = list_first_entry(&devlink->resource_list, | |
2791 | struct devlink_resource, list); | |
2792 | start_again: | |
2793 | err = devlink_dpipe_send_and_alloc_skb(&skb, info); | |
2794 | if (err) | |
2795 | return err; | |
2796 | ||
2797 | hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq, | |
2798 | &devlink_nl_family, NLM_F_MULTI, cmd); | |
2799 | if (!hdr) { | |
2800 | nlmsg_free(skb); | |
2801 | return -EMSGSIZE; | |
2802 | } | |
2803 | ||
2804 | if (devlink_nl_put_handle(skb, devlink)) | |
2805 | goto nla_put_failure; | |
2806 | ||
ae0be8de MK |
2807 | resources_attr = nla_nest_start_noflag(skb, |
2808 | DEVLINK_ATTR_RESOURCE_LIST); | |
d9f9b9a4 AS |
2809 | if (!resources_attr) |
2810 | goto nla_put_failure; | |
2811 | ||
2812 | incomplete = false; | |
2813 | i = 0; | |
2814 | list_for_each_entry_from(resource, &devlink->resource_list, list) { | |
2815 | err = devlink_resource_put(devlink, skb, resource); | |
2816 | if (err) { | |
2817 | if (!i) | |
2818 | goto err_resource_put; | |
2819 | incomplete = true; | |
2820 | break; | |
2821 | } | |
2822 | i++; | |
2823 | } | |
2824 | nla_nest_end(skb, resources_attr); | |
2825 | genlmsg_end(skb, hdr); | |
2826 | if (incomplete) | |
2827 | goto start_again; | |
2828 | send_done: | |
2829 | nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq, | |
2830 | NLMSG_DONE, 0, flags | NLM_F_MULTI); | |
2831 | if (!nlh) { | |
2832 | err = devlink_dpipe_send_and_alloc_skb(&skb, info); | |
2833 | if (err) | |
83fe9a96 | 2834 | return err; |
d9f9b9a4 AS |
2835 | goto send_done; |
2836 | } | |
2837 | return genlmsg_reply(skb, info); | |
2838 | ||
2839 | nla_put_failure: | |
2840 | err = -EMSGSIZE; | |
2841 | err_resource_put: | |
d9f9b9a4 AS |
2842 | nlmsg_free(skb); |
2843 | return err; | |
2844 | } | |
2845 | ||
2846 | static int devlink_nl_cmd_resource_dump(struct sk_buff *skb, | |
2847 | struct genl_info *info) | |
2848 | { | |
2849 | struct devlink *devlink = info->user_ptr[0]; | |
2850 | ||
2851 | if (list_empty(&devlink->resource_list)) | |
2852 | return -EOPNOTSUPP; | |
2853 | ||
2854 | return devlink_resource_fill(info, DEVLINK_CMD_RESOURCE_DUMP, 0); | |
2855 | } | |
2856 | ||
2d8dc5bb AS |
2857 | static int |
2858 | devlink_resources_validate(struct devlink *devlink, | |
2859 | struct devlink_resource *resource, | |
2860 | struct genl_info *info) | |
2861 | { | |
2862 | struct list_head *resource_list; | |
2863 | int err = 0; | |
2864 | ||
2865 | if (resource) | |
2866 | resource_list = &resource->resource_list; | |
2867 | else | |
2868 | resource_list = &devlink->resource_list; | |
2869 | ||
2870 | list_for_each_entry(resource, resource_list, list) { | |
2871 | if (!resource->size_valid) | |
2872 | return -EINVAL; | |
2873 | err = devlink_resources_validate(devlink, resource, info); | |
2874 | if (err) | |
2875 | return err; | |
2876 | } | |
2877 | return err; | |
2878 | } | |
2879 | ||
070c63f2 JP |
2880 | static struct net *devlink_netns_get(struct sk_buff *skb, |
2881 | struct genl_info *info) | |
2882 | { | |
2883 | struct nlattr *netns_pid_attr = info->attrs[DEVLINK_ATTR_NETNS_PID]; | |
2884 | struct nlattr *netns_fd_attr = info->attrs[DEVLINK_ATTR_NETNS_FD]; | |
2885 | struct nlattr *netns_id_attr = info->attrs[DEVLINK_ATTR_NETNS_ID]; | |
2886 | struct net *net; | |
2887 | ||
2888 | if (!!netns_pid_attr + !!netns_fd_attr + !!netns_id_attr > 1) { | |
054eae82 | 2889 | NL_SET_ERR_MSG_MOD(info->extack, "multiple netns identifying attributes specified"); |
070c63f2 JP |
2890 | return ERR_PTR(-EINVAL); |
2891 | } | |
2892 | ||
2893 | if (netns_pid_attr) { | |
2894 | net = get_net_ns_by_pid(nla_get_u32(netns_pid_attr)); | |
2895 | } else if (netns_fd_attr) { | |
2896 | net = get_net_ns_by_fd(nla_get_u32(netns_fd_attr)); | |
2897 | } else if (netns_id_attr) { | |
2898 | net = get_net_ns_by_id(sock_net(skb->sk), | |
2899 | nla_get_u32(netns_id_attr)); | |
2900 | if (!net) | |
2901 | net = ERR_PTR(-EINVAL); | |
2902 | } else { | |
2903 | WARN_ON(1); | |
2904 | net = ERR_PTR(-EINVAL); | |
2905 | } | |
2906 | if (IS_ERR(net)) { | |
054eae82 | 2907 | NL_SET_ERR_MSG_MOD(info->extack, "Unknown network namespace"); |
070c63f2 JP |
2908 | return ERR_PTR(-EINVAL); |
2909 | } | |
2910 | if (!netlink_ns_capable(skb, net->user_ns, CAP_NET_ADMIN)) { | |
2911 | put_net(net); | |
2912 | return ERR_PTR(-EPERM); | |
2913 | } | |
2914 | return net; | |
2915 | } | |
2916 | ||
2917 | static void devlink_param_notify(struct devlink *devlink, | |
2918 | unsigned int port_index, | |
2919 | struct devlink_param_item *param_item, | |
2920 | enum devlink_command cmd); | |
2921 | ||
2922 | static void devlink_reload_netns_change(struct devlink *devlink, | |
2923 | struct net *dest_net) | |
2924 | { | |
2925 | struct devlink_param_item *param_item; | |
2926 | ||
2927 | /* Userspace needs to be notified about devlink objects | |
2928 | * removed from original and entering new network namespace. | |
2929 | * The rest of the devlink objects are re-created during | |
2930 | * reload process so the notifications are generated separatelly. | |
2931 | */ | |
2932 | ||
2933 | list_for_each_entry(param_item, &devlink->param_list, list) | |
2934 | devlink_param_notify(devlink, 0, param_item, | |
2935 | DEVLINK_CMD_PARAM_DEL); | |
2936 | devlink_notify(devlink, DEVLINK_CMD_DEL); | |
2937 | ||
8273fd84 | 2938 | __devlink_net_set(devlink, dest_net); |
070c63f2 JP |
2939 | |
2940 | devlink_notify(devlink, DEVLINK_CMD_NEW); | |
2941 | list_for_each_entry(param_item, &devlink->param_list, list) | |
2942 | devlink_param_notify(devlink, 0, param_item, | |
2943 | DEVLINK_CMD_PARAM_NEW); | |
2944 | } | |
2945 | ||
eac5f8a9 | 2946 | static bool devlink_reload_supported(const struct devlink *devlink) |
97691069 JP |
2947 | { |
2948 | return devlink->ops->reload_down && devlink->ops->reload_up; | |
2949 | } | |
2950 | ||
2670ac26 JP |
2951 | static void devlink_reload_failed_set(struct devlink *devlink, |
2952 | bool reload_failed) | |
2953 | { | |
2954 | if (devlink->reload_failed == reload_failed) | |
2955 | return; | |
2956 | devlink->reload_failed = reload_failed; | |
2957 | devlink_notify(devlink, DEVLINK_CMD_NEW); | |
2958 | } | |
2959 | ||
2960 | bool devlink_is_reload_failed(const struct devlink *devlink) | |
2961 | { | |
2962 | return devlink->reload_failed; | |
2963 | } | |
2964 | EXPORT_SYMBOL_GPL(devlink_is_reload_failed); | |
2965 | ||
070c63f2 JP |
2966 | static int devlink_reload(struct devlink *devlink, struct net *dest_net, |
2967 | struct netlink_ext_ack *extack) | |
2968 | { | |
2969 | int err; | |
2970 | ||
a0c76345 JP |
2971 | if (!devlink->reload_enabled) |
2972 | return -EOPNOTSUPP; | |
2973 | ||
070c63f2 JP |
2974 | err = devlink->ops->reload_down(devlink, !!dest_net, extack); |
2975 | if (err) | |
2976 | return err; | |
2977 | ||
2978 | if (dest_net && !net_eq(dest_net, devlink_net(devlink))) | |
2979 | devlink_reload_netns_change(devlink, dest_net); | |
2980 | ||
2981 | err = devlink->ops->reload_up(devlink, extack); | |
2982 | devlink_reload_failed_set(devlink, !!err); | |
2983 | return err; | |
2984 | } | |
2985 | ||
2d8dc5bb AS |
2986 | static int devlink_nl_cmd_reload(struct sk_buff *skb, struct genl_info *info) |
2987 | { | |
2988 | struct devlink *devlink = info->user_ptr[0]; | |
070c63f2 | 2989 | struct net *dest_net = NULL; |
2d8dc5bb AS |
2990 | int err; |
2991 | ||
9232a3e6 | 2992 | if (!devlink_reload_supported(devlink)) |
2d8dc5bb AS |
2993 | return -EOPNOTSUPP; |
2994 | ||
2995 | err = devlink_resources_validate(devlink, NULL, info); | |
2996 | if (err) { | |
2997 | NL_SET_ERR_MSG_MOD(info->extack, "resources size validation failed"); | |
2998 | return err; | |
2999 | } | |
070c63f2 JP |
3000 | |
3001 | if (info->attrs[DEVLINK_ATTR_NETNS_PID] || | |
3002 | info->attrs[DEVLINK_ATTR_NETNS_FD] || | |
3003 | info->attrs[DEVLINK_ATTR_NETNS_ID]) { | |
3004 | dest_net = devlink_netns_get(skb, info); | |
3005 | if (IS_ERR(dest_net)) | |
3006 | return PTR_ERR(dest_net); | |
3007 | } | |
3008 | ||
3009 | err = devlink_reload(devlink, dest_net, info->extack); | |
3010 | ||
3011 | if (dest_net) | |
3012 | put_net(dest_net); | |
3013 | ||
2670ac26 | 3014 | return err; |
2d8dc5bb AS |
3015 | } |
3016 | ||
191ed202 JP |
3017 | static int devlink_nl_flash_update_fill(struct sk_buff *msg, |
3018 | struct devlink *devlink, | |
3019 | enum devlink_command cmd, | |
3020 | const char *status_msg, | |
3021 | const char *component, | |
3022 | unsigned long done, unsigned long total) | |
3023 | { | |
3024 | void *hdr; | |
3025 | ||
3026 | hdr = genlmsg_put(msg, 0, 0, &devlink_nl_family, 0, cmd); | |
3027 | if (!hdr) | |
3028 | return -EMSGSIZE; | |
3029 | ||
3030 | if (devlink_nl_put_handle(msg, devlink)) | |
3031 | goto nla_put_failure; | |
3032 | ||
3033 | if (cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS) | |
3034 | goto out; | |
3035 | ||
3036 | if (status_msg && | |
3037 | nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_MSG, | |
3038 | status_msg)) | |
3039 | goto nla_put_failure; | |
3040 | if (component && | |
3041 | nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_COMPONENT, | |
3042 | component)) | |
3043 | goto nla_put_failure; | |
3044 | if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_DONE, | |
3045 | done, DEVLINK_ATTR_PAD)) | |
3046 | goto nla_put_failure; | |
3047 | if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_TOTAL, | |
3048 | total, DEVLINK_ATTR_PAD)) | |
3049 | goto nla_put_failure; | |
3050 | ||
3051 | out: | |
3052 | genlmsg_end(msg, hdr); | |
3053 | return 0; | |
3054 | ||
3055 | nla_put_failure: | |
3056 | genlmsg_cancel(msg, hdr); | |
3057 | return -EMSGSIZE; | |
3058 | } | |
3059 | ||
3060 | static void __devlink_flash_update_notify(struct devlink *devlink, | |
3061 | enum devlink_command cmd, | |
3062 | const char *status_msg, | |
3063 | const char *component, | |
3064 | unsigned long done, | |
3065 | unsigned long total) | |
3066 | { | |
3067 | struct sk_buff *msg; | |
3068 | int err; | |
3069 | ||
3070 | WARN_ON(cmd != DEVLINK_CMD_FLASH_UPDATE && | |
3071 | cmd != DEVLINK_CMD_FLASH_UPDATE_END && | |
3072 | cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS); | |
3073 | ||
3074 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
3075 | if (!msg) | |
3076 | return; | |
3077 | ||
3078 | err = devlink_nl_flash_update_fill(msg, devlink, cmd, status_msg, | |
3079 | component, done, total); | |
3080 | if (err) | |
3081 | goto out_free_msg; | |
3082 | ||
3083 | genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), | |
3084 | msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL); | |
3085 | return; | |
3086 | ||
3087 | out_free_msg: | |
3088 | nlmsg_free(msg); | |
3089 | } | |
3090 | ||
3091 | void devlink_flash_update_begin_notify(struct devlink *devlink) | |
3092 | { | |
3093 | __devlink_flash_update_notify(devlink, | |
3094 | DEVLINK_CMD_FLASH_UPDATE, | |
3095 | NULL, NULL, 0, 0); | |
3096 | } | |
3097 | EXPORT_SYMBOL_GPL(devlink_flash_update_begin_notify); | |
3098 | ||
3099 | void devlink_flash_update_end_notify(struct devlink *devlink) | |
3100 | { | |
3101 | __devlink_flash_update_notify(devlink, | |
3102 | DEVLINK_CMD_FLASH_UPDATE_END, | |
3103 | NULL, NULL, 0, 0); | |
3104 | } | |
3105 | EXPORT_SYMBOL_GPL(devlink_flash_update_end_notify); | |
3106 | ||
3107 | void devlink_flash_update_status_notify(struct devlink *devlink, | |
3108 | const char *status_msg, | |
3109 | const char *component, | |
3110 | unsigned long done, | |
3111 | unsigned long total) | |
3112 | { | |
3113 | __devlink_flash_update_notify(devlink, | |
3114 | DEVLINK_CMD_FLASH_UPDATE_STATUS, | |
3115 | status_msg, component, done, total); | |
3116 | } | |
3117 | EXPORT_SYMBOL_GPL(devlink_flash_update_status_notify); | |
3118 | ||
76726ccb JK |
3119 | static int devlink_nl_cmd_flash_update(struct sk_buff *skb, |
3120 | struct genl_info *info) | |
3121 | { | |
3122 | struct devlink *devlink = info->user_ptr[0]; | |
3123 | const char *file_name, *component; | |
3124 | struct nlattr *nla_component; | |
3125 | ||
3126 | if (!devlink->ops->flash_update) | |
3127 | return -EOPNOTSUPP; | |
3128 | ||
3129 | if (!info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME]) | |
3130 | return -EINVAL; | |
3131 | file_name = nla_data(info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME]); | |
3132 | ||
3133 | nla_component = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_COMPONENT]; | |
3134 | component = nla_component ? nla_data(nla_component) : NULL; | |
3135 | ||
3136 | return devlink->ops->flash_update(devlink, file_name, component, | |
3137 | info->extack); | |
3138 | } | |
3139 | ||
036467c3 MS |
3140 | static const struct devlink_param devlink_param_generic[] = { |
3141 | { | |
3142 | .id = DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET, | |
3143 | .name = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_NAME, | |
3144 | .type = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_TYPE, | |
3145 | }, | |
3146 | { | |
3147 | .id = DEVLINK_PARAM_GENERIC_ID_MAX_MACS, | |
3148 | .name = DEVLINK_PARAM_GENERIC_MAX_MACS_NAME, | |
3149 | .type = DEVLINK_PARAM_GENERIC_MAX_MACS_TYPE, | |
3150 | }, | |
f567bcda VV |
3151 | { |
3152 | .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_SRIOV, | |
3153 | .name = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_NAME, | |
3154 | .type = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_TYPE, | |
3155 | }, | |
f6a69885 AV |
3156 | { |
3157 | .id = DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT, | |
3158 | .name = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_NAME, | |
3159 | .type = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_TYPE, | |
3160 | }, | |
e3b51061 VV |
3161 | { |
3162 | .id = DEVLINK_PARAM_GENERIC_ID_IGNORE_ARI, | |
3163 | .name = DEVLINK_PARAM_GENERIC_IGNORE_ARI_NAME, | |
3164 | .type = DEVLINK_PARAM_GENERIC_IGNORE_ARI_TYPE, | |
3165 | }, | |
f61cba42 VV |
3166 | { |
3167 | .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX, | |
3168 | .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_NAME, | |
3169 | .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_TYPE, | |
3170 | }, | |
16511789 VV |
3171 | { |
3172 | .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN, | |
3173 | .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_NAME, | |
3174 | .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_TYPE, | |
3175 | }, | |
846e980a ST |
3176 | { |
3177 | .id = DEVLINK_PARAM_GENERIC_ID_FW_LOAD_POLICY, | |
3178 | .name = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_NAME, | |
3179 | .type = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_TYPE, | |
3180 | }, | |
5bbd21df DM |
3181 | { |
3182 | .id = DEVLINK_PARAM_GENERIC_ID_RESET_DEV_ON_DRV_PROBE, | |
3183 | .name = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_NAME, | |
3184 | .type = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_TYPE, | |
3185 | }, | |
6c7295e1 MG |
3186 | { |
3187 | .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_ROCE, | |
3188 | .name = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_NAME, | |
3189 | .type = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_TYPE, | |
3190 | }, | |
036467c3 | 3191 | }; |
eabaef18 MS |
3192 | |
3193 | static int devlink_param_generic_verify(const struct devlink_param *param) | |
3194 | { | |
3195 | /* verify it match generic parameter by id and name */ | |
3196 | if (param->id > DEVLINK_PARAM_GENERIC_ID_MAX) | |
3197 | return -EINVAL; | |
3198 | if (strcmp(param->name, devlink_param_generic[param->id].name)) | |
3199 | return -ENOENT; | |
3200 | ||
3201 | WARN_ON(param->type != devlink_param_generic[param->id].type); | |
3202 | ||
3203 | return 0; | |
3204 | } | |
3205 | ||
3206 | static int devlink_param_driver_verify(const struct devlink_param *param) | |
3207 | { | |
3208 | int i; | |
3209 | ||
3210 | if (param->id <= DEVLINK_PARAM_GENERIC_ID_MAX) | |
3211 | return -EINVAL; | |
3212 | /* verify no such name in generic params */ | |
3213 | for (i = 0; i <= DEVLINK_PARAM_GENERIC_ID_MAX; i++) | |
3214 | if (!strcmp(param->name, devlink_param_generic[i].name)) | |
3215 | return -EEXIST; | |
3216 | ||
3217 | return 0; | |
3218 | } | |
3219 | ||
3220 | static struct devlink_param_item * | |
3221 | devlink_param_find_by_name(struct list_head *param_list, | |
3222 | const char *param_name) | |
3223 | { | |
3224 | struct devlink_param_item *param_item; | |
3225 | ||
3226 | list_for_each_entry(param_item, param_list, list) | |
3227 | if (!strcmp(param_item->param->name, param_name)) | |
3228 | return param_item; | |
3229 | return NULL; | |
3230 | } | |
3231 | ||
ec01aeb1 MS |
3232 | static struct devlink_param_item * |
3233 | devlink_param_find_by_id(struct list_head *param_list, u32 param_id) | |
3234 | { | |
3235 | struct devlink_param_item *param_item; | |
3236 | ||
3237 | list_for_each_entry(param_item, param_list, list) | |
3238 | if (param_item->param->id == param_id) | |
3239 | return param_item; | |
3240 | return NULL; | |
3241 | } | |
3242 | ||
45f05def MS |
3243 | static bool |
3244 | devlink_param_cmode_is_supported(const struct devlink_param *param, | |
3245 | enum devlink_param_cmode cmode) | |
3246 | { | |
3247 | return test_bit(cmode, ¶m->supported_cmodes); | |
3248 | } | |
3249 | ||
3250 | static int devlink_param_get(struct devlink *devlink, | |
3251 | const struct devlink_param *param, | |
3252 | struct devlink_param_gset_ctx *ctx) | |
3253 | { | |
3254 | if (!param->get) | |
3255 | return -EOPNOTSUPP; | |
3256 | return param->get(devlink, param->id, ctx); | |
3257 | } | |
3258 | ||
e3b7ca18 MS |
3259 | static int devlink_param_set(struct devlink *devlink, |
3260 | const struct devlink_param *param, | |
3261 | struct devlink_param_gset_ctx *ctx) | |
3262 | { | |
3263 | if (!param->set) | |
3264 | return -EOPNOTSUPP; | |
3265 | return param->set(devlink, param->id, ctx); | |
3266 | } | |
3267 | ||
45f05def MS |
3268 | static int |
3269 | devlink_param_type_to_nla_type(enum devlink_param_type param_type) | |
3270 | { | |
3271 | switch (param_type) { | |
3272 | case DEVLINK_PARAM_TYPE_U8: | |
3273 | return NLA_U8; | |
3274 | case DEVLINK_PARAM_TYPE_U16: | |
3275 | return NLA_U16; | |
3276 | case DEVLINK_PARAM_TYPE_U32: | |
3277 | return NLA_U32; | |
3278 | case DEVLINK_PARAM_TYPE_STRING: | |
3279 | return NLA_STRING; | |
3280 | case DEVLINK_PARAM_TYPE_BOOL: | |
3281 | return NLA_FLAG; | |
3282 | default: | |
3283 | return -EINVAL; | |
3284 | } | |
3285 | } | |
3286 | ||
3287 | static int | |
3288 | devlink_nl_param_value_fill_one(struct sk_buff *msg, | |
3289 | enum devlink_param_type type, | |
3290 | enum devlink_param_cmode cmode, | |
3291 | union devlink_param_value val) | |
3292 | { | |
3293 | struct nlattr *param_value_attr; | |
3294 | ||
ae0be8de MK |
3295 | param_value_attr = nla_nest_start_noflag(msg, |
3296 | DEVLINK_ATTR_PARAM_VALUE); | |
45f05def MS |
3297 | if (!param_value_attr) |
3298 | goto nla_put_failure; | |
3299 | ||
3300 | if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_CMODE, cmode)) | |
3301 | goto value_nest_cancel; | |
3302 | ||
3303 | switch (type) { | |
3304 | case DEVLINK_PARAM_TYPE_U8: | |
3305 | if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu8)) | |
3306 | goto value_nest_cancel; | |
3307 | break; | |
3308 | case DEVLINK_PARAM_TYPE_U16: | |
3309 | if (nla_put_u16(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu16)) | |
3310 | goto value_nest_cancel; | |
3311 | break; | |
3312 | case DEVLINK_PARAM_TYPE_U32: | |
3313 | if (nla_put_u32(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu32)) | |
3314 | goto value_nest_cancel; | |
3315 | break; | |
3316 | case DEVLINK_PARAM_TYPE_STRING: | |
3317 | if (nla_put_string(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, | |
3318 | val.vstr)) | |
3319 | goto value_nest_cancel; | |
3320 | break; | |
3321 | case DEVLINK_PARAM_TYPE_BOOL: | |
3322 | if (val.vbool && | |
3323 | nla_put_flag(msg, DEVLINK_ATTR_PARAM_VALUE_DATA)) | |
3324 | goto value_nest_cancel; | |
3325 | break; | |
3326 | } | |
3327 | ||
3328 | nla_nest_end(msg, param_value_attr); | |
3329 | return 0; | |
3330 | ||
3331 | value_nest_cancel: | |
3332 | nla_nest_cancel(msg, param_value_attr); | |
3333 | nla_put_failure: | |
3334 | return -EMSGSIZE; | |
3335 | } | |
3336 | ||
3337 | static int devlink_nl_param_fill(struct sk_buff *msg, struct devlink *devlink, | |
f4601dee | 3338 | unsigned int port_index, |
45f05def MS |
3339 | struct devlink_param_item *param_item, |
3340 | enum devlink_command cmd, | |
3341 | u32 portid, u32 seq, int flags) | |
3342 | { | |
3343 | union devlink_param_value param_value[DEVLINK_PARAM_CMODE_MAX + 1]; | |
7c62cfb8 | 3344 | bool param_value_set[DEVLINK_PARAM_CMODE_MAX + 1] = {}; |
45f05def MS |
3345 | const struct devlink_param *param = param_item->param; |
3346 | struct devlink_param_gset_ctx ctx; | |
3347 | struct nlattr *param_values_list; | |
3348 | struct nlattr *param_attr; | |
3349 | int nla_type; | |
3350 | void *hdr; | |
3351 | int err; | |
3352 | int i; | |
3353 | ||
3354 | /* Get value from driver part to driverinit configuration mode */ | |
3355 | for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) { | |
3356 | if (!devlink_param_cmode_is_supported(param, i)) | |
3357 | continue; | |
3358 | if (i == DEVLINK_PARAM_CMODE_DRIVERINIT) { | |
3359 | if (!param_item->driverinit_value_valid) | |
3360 | return -EOPNOTSUPP; | |
3361 | param_value[i] = param_item->driverinit_value; | |
3362 | } else { | |
7c62cfb8 JP |
3363 | if (!param_item->published) |
3364 | continue; | |
45f05def MS |
3365 | ctx.cmode = i; |
3366 | err = devlink_param_get(devlink, param, &ctx); | |
3367 | if (err) | |
3368 | return err; | |
3369 | param_value[i] = ctx.val; | |
3370 | } | |
7c62cfb8 | 3371 | param_value_set[i] = true; |
45f05def MS |
3372 | } |
3373 | ||
3374 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
3375 | if (!hdr) | |
3376 | return -EMSGSIZE; | |
3377 | ||
3378 | if (devlink_nl_put_handle(msg, devlink)) | |
3379 | goto genlmsg_cancel; | |
f4601dee | 3380 | |
c1e5786d VV |
3381 | if (cmd == DEVLINK_CMD_PORT_PARAM_GET || |
3382 | cmd == DEVLINK_CMD_PORT_PARAM_NEW || | |
3383 | cmd == DEVLINK_CMD_PORT_PARAM_DEL) | |
f4601dee VV |
3384 | if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, port_index)) |
3385 | goto genlmsg_cancel; | |
3386 | ||
ae0be8de | 3387 | param_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PARAM); |
45f05def MS |
3388 | if (!param_attr) |
3389 | goto genlmsg_cancel; | |
3390 | if (nla_put_string(msg, DEVLINK_ATTR_PARAM_NAME, param->name)) | |
3391 | goto param_nest_cancel; | |
3392 | if (param->generic && nla_put_flag(msg, DEVLINK_ATTR_PARAM_GENERIC)) | |
3393 | goto param_nest_cancel; | |
3394 | ||
3395 | nla_type = devlink_param_type_to_nla_type(param->type); | |
3396 | if (nla_type < 0) | |
3397 | goto param_nest_cancel; | |
3398 | if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_TYPE, nla_type)) | |
3399 | goto param_nest_cancel; | |
3400 | ||
ae0be8de MK |
3401 | param_values_list = nla_nest_start_noflag(msg, |
3402 | DEVLINK_ATTR_PARAM_VALUES_LIST); | |
45f05def MS |
3403 | if (!param_values_list) |
3404 | goto param_nest_cancel; | |
3405 | ||
3406 | for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) { | |
7c62cfb8 | 3407 | if (!param_value_set[i]) |
45f05def MS |
3408 | continue; |
3409 | err = devlink_nl_param_value_fill_one(msg, param->type, | |
3410 | i, param_value[i]); | |
3411 | if (err) | |
3412 | goto values_list_nest_cancel; | |
3413 | } | |
3414 | ||
3415 | nla_nest_end(msg, param_values_list); | |
3416 | nla_nest_end(msg, param_attr); | |
3417 | genlmsg_end(msg, hdr); | |
3418 | return 0; | |
3419 | ||
3420 | values_list_nest_cancel: | |
3421 | nla_nest_end(msg, param_values_list); | |
3422 | param_nest_cancel: | |
3423 | nla_nest_cancel(msg, param_attr); | |
3424 | genlmsg_cancel: | |
3425 | genlmsg_cancel(msg, hdr); | |
3426 | return -EMSGSIZE; | |
3427 | } | |
3428 | ||
ea601e17 | 3429 | static void devlink_param_notify(struct devlink *devlink, |
c1e5786d | 3430 | unsigned int port_index, |
ea601e17 MS |
3431 | struct devlink_param_item *param_item, |
3432 | enum devlink_command cmd) | |
3433 | { | |
3434 | struct sk_buff *msg; | |
3435 | int err; | |
3436 | ||
c1e5786d VV |
3437 | WARN_ON(cmd != DEVLINK_CMD_PARAM_NEW && cmd != DEVLINK_CMD_PARAM_DEL && |
3438 | cmd != DEVLINK_CMD_PORT_PARAM_NEW && | |
3439 | cmd != DEVLINK_CMD_PORT_PARAM_DEL); | |
ea601e17 MS |
3440 | |
3441 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
3442 | if (!msg) | |
3443 | return; | |
c1e5786d VV |
3444 | err = devlink_nl_param_fill(msg, devlink, port_index, param_item, cmd, |
3445 | 0, 0, 0); | |
ea601e17 MS |
3446 | if (err) { |
3447 | nlmsg_free(msg); | |
3448 | return; | |
3449 | } | |
3450 | ||
3451 | genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), | |
3452 | msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL); | |
3453 | } | |
3454 | ||
45f05def MS |
3455 | static int devlink_nl_cmd_param_get_dumpit(struct sk_buff *msg, |
3456 | struct netlink_callback *cb) | |
3457 | { | |
3458 | struct devlink_param_item *param_item; | |
3459 | struct devlink *devlink; | |
3460 | int start = cb->args[0]; | |
3461 | int idx = 0; | |
c62c2cfb | 3462 | int err = 0; |
45f05def MS |
3463 | |
3464 | mutex_lock(&devlink_mutex); | |
3465 | list_for_each_entry(devlink, &devlink_list, list) { | |
3466 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) | |
3467 | continue; | |
3468 | mutex_lock(&devlink->lock); | |
3469 | list_for_each_entry(param_item, &devlink->param_list, list) { | |
3470 | if (idx < start) { | |
3471 | idx++; | |
3472 | continue; | |
3473 | } | |
f4601dee | 3474 | err = devlink_nl_param_fill(msg, devlink, 0, param_item, |
45f05def MS |
3475 | DEVLINK_CMD_PARAM_GET, |
3476 | NETLINK_CB(cb->skb).portid, | |
3477 | cb->nlh->nlmsg_seq, | |
3478 | NLM_F_MULTI); | |
82274d07 JK |
3479 | if (err == -EOPNOTSUPP) { |
3480 | err = 0; | |
3481 | } else if (err) { | |
45f05def MS |
3482 | mutex_unlock(&devlink->lock); |
3483 | goto out; | |
3484 | } | |
3485 | idx++; | |
3486 | } | |
3487 | mutex_unlock(&devlink->lock); | |
3488 | } | |
3489 | out: | |
3490 | mutex_unlock(&devlink_mutex); | |
3491 | ||
c62c2cfb JP |
3492 | if (err != -EMSGSIZE) |
3493 | return err; | |
3494 | ||
45f05def MS |
3495 | cb->args[0] = idx; |
3496 | return msg->len; | |
3497 | } | |
3498 | ||
e3b7ca18 MS |
3499 | static int |
3500 | devlink_param_type_get_from_info(struct genl_info *info, | |
3501 | enum devlink_param_type *param_type) | |
3502 | { | |
3503 | if (!info->attrs[DEVLINK_ATTR_PARAM_TYPE]) | |
3504 | return -EINVAL; | |
3505 | ||
3506 | switch (nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_TYPE])) { | |
3507 | case NLA_U8: | |
3508 | *param_type = DEVLINK_PARAM_TYPE_U8; | |
3509 | break; | |
3510 | case NLA_U16: | |
3511 | *param_type = DEVLINK_PARAM_TYPE_U16; | |
3512 | break; | |
3513 | case NLA_U32: | |
3514 | *param_type = DEVLINK_PARAM_TYPE_U32; | |
3515 | break; | |
3516 | case NLA_STRING: | |
3517 | *param_type = DEVLINK_PARAM_TYPE_STRING; | |
3518 | break; | |
3519 | case NLA_FLAG: | |
3520 | *param_type = DEVLINK_PARAM_TYPE_BOOL; | |
3521 | break; | |
3522 | default: | |
3523 | return -EINVAL; | |
3524 | } | |
3525 | ||
3526 | return 0; | |
3527 | } | |
3528 | ||
3529 | static int | |
3530 | devlink_param_value_get_from_info(const struct devlink_param *param, | |
3531 | struct genl_info *info, | |
3532 | union devlink_param_value *value) | |
3533 | { | |
8750939b | 3534 | struct nlattr *param_data; |
f355cfcd MS |
3535 | int len; |
3536 | ||
8750939b JK |
3537 | param_data = info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]; |
3538 | ||
3539 | if (param->type != DEVLINK_PARAM_TYPE_BOOL && !param_data) | |
e3b7ca18 MS |
3540 | return -EINVAL; |
3541 | ||
3542 | switch (param->type) { | |
3543 | case DEVLINK_PARAM_TYPE_U8: | |
8750939b JK |
3544 | if (nla_len(param_data) != sizeof(u8)) |
3545 | return -EINVAL; | |
3546 | value->vu8 = nla_get_u8(param_data); | |
e3b7ca18 MS |
3547 | break; |
3548 | case DEVLINK_PARAM_TYPE_U16: | |
8750939b JK |
3549 | if (nla_len(param_data) != sizeof(u16)) |
3550 | return -EINVAL; | |
3551 | value->vu16 = nla_get_u16(param_data); | |
e3b7ca18 MS |
3552 | break; |
3553 | case DEVLINK_PARAM_TYPE_U32: | |
8750939b JK |
3554 | if (nla_len(param_data) != sizeof(u32)) |
3555 | return -EINVAL; | |
3556 | value->vu32 = nla_get_u32(param_data); | |
e3b7ca18 MS |
3557 | break; |
3558 | case DEVLINK_PARAM_TYPE_STRING: | |
8750939b JK |
3559 | len = strnlen(nla_data(param_data), nla_len(param_data)); |
3560 | if (len == nla_len(param_data) || | |
bde74ad1 | 3561 | len >= __DEVLINK_PARAM_MAX_STRING_VALUE) |
e3b7ca18 | 3562 | return -EINVAL; |
8750939b | 3563 | strcpy(value->vstr, nla_data(param_data)); |
e3b7ca18 MS |
3564 | break; |
3565 | case DEVLINK_PARAM_TYPE_BOOL: | |
8750939b JK |
3566 | if (param_data && nla_len(param_data)) |
3567 | return -EINVAL; | |
3568 | value->vbool = nla_get_flag(param_data); | |
e3b7ca18 MS |
3569 | break; |
3570 | } | |
3571 | return 0; | |
3572 | } | |
3573 | ||
45f05def | 3574 | static struct devlink_param_item * |
f4601dee | 3575 | devlink_param_get_from_info(struct list_head *param_list, |
45f05def MS |
3576 | struct genl_info *info) |
3577 | { | |
3578 | char *param_name; | |
3579 | ||
3580 | if (!info->attrs[DEVLINK_ATTR_PARAM_NAME]) | |
3581 | return NULL; | |
3582 | ||
3583 | param_name = nla_data(info->attrs[DEVLINK_ATTR_PARAM_NAME]); | |
f4601dee | 3584 | return devlink_param_find_by_name(param_list, param_name); |
45f05def MS |
3585 | } |
3586 | ||
3587 | static int devlink_nl_cmd_param_get_doit(struct sk_buff *skb, | |
3588 | struct genl_info *info) | |
3589 | { | |
3590 | struct devlink *devlink = info->user_ptr[0]; | |
3591 | struct devlink_param_item *param_item; | |
3592 | struct sk_buff *msg; | |
3593 | int err; | |
3594 | ||
f4601dee | 3595 | param_item = devlink_param_get_from_info(&devlink->param_list, info); |
45f05def MS |
3596 | if (!param_item) |
3597 | return -EINVAL; | |
3598 | ||
3599 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
3600 | if (!msg) | |
3601 | return -ENOMEM; | |
3602 | ||
f4601dee | 3603 | err = devlink_nl_param_fill(msg, devlink, 0, param_item, |
45f05def MS |
3604 | DEVLINK_CMD_PARAM_GET, |
3605 | info->snd_portid, info->snd_seq, 0); | |
3606 | if (err) { | |
3607 | nlmsg_free(msg); | |
3608 | return err; | |
3609 | } | |
3610 | ||
3611 | return genlmsg_reply(msg, info); | |
3612 | } | |
3613 | ||
9c54873b | 3614 | static int __devlink_nl_cmd_param_set_doit(struct devlink *devlink, |
c1e5786d | 3615 | unsigned int port_index, |
9c54873b VV |
3616 | struct list_head *param_list, |
3617 | struct genl_info *info, | |
3618 | enum devlink_command cmd) | |
e3b7ca18 | 3619 | { |
e3b7ca18 MS |
3620 | enum devlink_param_type param_type; |
3621 | struct devlink_param_gset_ctx ctx; | |
3622 | enum devlink_param_cmode cmode; | |
3623 | struct devlink_param_item *param_item; | |
3624 | const struct devlink_param *param; | |
3625 | union devlink_param_value value; | |
3626 | int err = 0; | |
3627 | ||
9c54873b | 3628 | param_item = devlink_param_get_from_info(param_list, info); |
e3b7ca18 MS |
3629 | if (!param_item) |
3630 | return -EINVAL; | |
3631 | param = param_item->param; | |
3632 | err = devlink_param_type_get_from_info(info, ¶m_type); | |
3633 | if (err) | |
3634 | return err; | |
3635 | if (param_type != param->type) | |
3636 | return -EINVAL; | |
3637 | err = devlink_param_value_get_from_info(param, info, &value); | |
3638 | if (err) | |
3639 | return err; | |
3640 | if (param->validate) { | |
3641 | err = param->validate(devlink, param->id, value, info->extack); | |
3642 | if (err) | |
3643 | return err; | |
3644 | } | |
3645 | ||
3646 | if (!info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE]) | |
3647 | return -EINVAL; | |
3648 | cmode = nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE]); | |
3649 | if (!devlink_param_cmode_is_supported(param, cmode)) | |
3650 | return -EOPNOTSUPP; | |
3651 | ||
3652 | if (cmode == DEVLINK_PARAM_CMODE_DRIVERINIT) { | |
1276534c MS |
3653 | if (param->type == DEVLINK_PARAM_TYPE_STRING) |
3654 | strcpy(param_item->driverinit_value.vstr, value.vstr); | |
3655 | else | |
3656 | param_item->driverinit_value = value; | |
e3b7ca18 MS |
3657 | param_item->driverinit_value_valid = true; |
3658 | } else { | |
3659 | if (!param->set) | |
3660 | return -EOPNOTSUPP; | |
3661 | ctx.val = value; | |
3662 | ctx.cmode = cmode; | |
3663 | err = devlink_param_set(devlink, param, &ctx); | |
3664 | if (err) | |
3665 | return err; | |
3666 | } | |
3667 | ||
c1e5786d | 3668 | devlink_param_notify(devlink, port_index, param_item, cmd); |
e3b7ca18 MS |
3669 | return 0; |
3670 | } | |
3671 | ||
9c54873b VV |
3672 | static int devlink_nl_cmd_param_set_doit(struct sk_buff *skb, |
3673 | struct genl_info *info) | |
3674 | { | |
3675 | struct devlink *devlink = info->user_ptr[0]; | |
3676 | ||
c1e5786d | 3677 | return __devlink_nl_cmd_param_set_doit(devlink, 0, &devlink->param_list, |
9c54873b VV |
3678 | info, DEVLINK_CMD_PARAM_NEW); |
3679 | } | |
3680 | ||
eabaef18 | 3681 | static int devlink_param_register_one(struct devlink *devlink, |
c1e5786d | 3682 | unsigned int port_index, |
39e6160e | 3683 | struct list_head *param_list, |
c1e5786d VV |
3684 | const struct devlink_param *param, |
3685 | enum devlink_command cmd) | |
eabaef18 MS |
3686 | { |
3687 | struct devlink_param_item *param_item; | |
3688 | ||
39e6160e | 3689 | if (devlink_param_find_by_name(param_list, param->name)) |
eabaef18 MS |
3690 | return -EEXIST; |
3691 | ||
3692 | if (param->supported_cmodes == BIT(DEVLINK_PARAM_CMODE_DRIVERINIT)) | |
3693 | WARN_ON(param->get || param->set); | |
3694 | else | |
3695 | WARN_ON(!param->get || !param->set); | |
3696 | ||
3697 | param_item = kzalloc(sizeof(*param_item), GFP_KERNEL); | |
3698 | if (!param_item) | |
3699 | return -ENOMEM; | |
3700 | param_item->param = param; | |
3701 | ||
39e6160e | 3702 | list_add_tail(¶m_item->list, param_list); |
c1e5786d | 3703 | devlink_param_notify(devlink, port_index, param_item, cmd); |
eabaef18 MS |
3704 | return 0; |
3705 | } | |
3706 | ||
3707 | static void devlink_param_unregister_one(struct devlink *devlink, | |
c1e5786d | 3708 | unsigned int port_index, |
39e6160e | 3709 | struct list_head *param_list, |
c1e5786d VV |
3710 | const struct devlink_param *param, |
3711 | enum devlink_command cmd) | |
eabaef18 MS |
3712 | { |
3713 | struct devlink_param_item *param_item; | |
3714 | ||
39e6160e | 3715 | param_item = devlink_param_find_by_name(param_list, param->name); |
eabaef18 | 3716 | WARN_ON(!param_item); |
c1e5786d | 3717 | devlink_param_notify(devlink, port_index, param_item, cmd); |
eabaef18 MS |
3718 | list_del(¶m_item->list); |
3719 | kfree(param_item); | |
3720 | } | |
3721 | ||
f4601dee VV |
3722 | static int devlink_nl_cmd_port_param_get_dumpit(struct sk_buff *msg, |
3723 | struct netlink_callback *cb) | |
3724 | { | |
3725 | struct devlink_param_item *param_item; | |
3726 | struct devlink_port *devlink_port; | |
3727 | struct devlink *devlink; | |
3728 | int start = cb->args[0]; | |
3729 | int idx = 0; | |
c62c2cfb | 3730 | int err = 0; |
f4601dee VV |
3731 | |
3732 | mutex_lock(&devlink_mutex); | |
3733 | list_for_each_entry(devlink, &devlink_list, list) { | |
3734 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) | |
3735 | continue; | |
3736 | mutex_lock(&devlink->lock); | |
3737 | list_for_each_entry(devlink_port, &devlink->port_list, list) { | |
3738 | list_for_each_entry(param_item, | |
3739 | &devlink_port->param_list, list) { | |
3740 | if (idx < start) { | |
3741 | idx++; | |
3742 | continue; | |
3743 | } | |
3744 | err = devlink_nl_param_fill(msg, | |
3745 | devlink_port->devlink, | |
3746 | devlink_port->index, param_item, | |
3747 | DEVLINK_CMD_PORT_PARAM_GET, | |
3748 | NETLINK_CB(cb->skb).portid, | |
3749 | cb->nlh->nlmsg_seq, | |
3750 | NLM_F_MULTI); | |
82274d07 JK |
3751 | if (err == -EOPNOTSUPP) { |
3752 | err = 0; | |
3753 | } else if (err) { | |
f4601dee VV |
3754 | mutex_unlock(&devlink->lock); |
3755 | goto out; | |
3756 | } | |
3757 | idx++; | |
3758 | } | |
3759 | } | |
3760 | mutex_unlock(&devlink->lock); | |
3761 | } | |
3762 | out: | |
3763 | mutex_unlock(&devlink_mutex); | |
3764 | ||
c62c2cfb JP |
3765 | if (err != -EMSGSIZE) |
3766 | return err; | |
3767 | ||
f4601dee VV |
3768 | cb->args[0] = idx; |
3769 | return msg->len; | |
3770 | } | |
3771 | ||
3772 | static int devlink_nl_cmd_port_param_get_doit(struct sk_buff *skb, | |
3773 | struct genl_info *info) | |
3774 | { | |
3775 | struct devlink_port *devlink_port = info->user_ptr[0]; | |
3776 | struct devlink_param_item *param_item; | |
3777 | struct sk_buff *msg; | |
3778 | int err; | |
3779 | ||
3780 | param_item = devlink_param_get_from_info(&devlink_port->param_list, | |
3781 | info); | |
3782 | if (!param_item) | |
3783 | return -EINVAL; | |
3784 | ||
3785 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
3786 | if (!msg) | |
3787 | return -ENOMEM; | |
3788 | ||
3789 | err = devlink_nl_param_fill(msg, devlink_port->devlink, | |
3790 | devlink_port->index, param_item, | |
3791 | DEVLINK_CMD_PORT_PARAM_GET, | |
3792 | info->snd_portid, info->snd_seq, 0); | |
3793 | if (err) { | |
3794 | nlmsg_free(msg); | |
3795 | return err; | |
3796 | } | |
3797 | ||
3798 | return genlmsg_reply(msg, info); | |
3799 | } | |
3800 | ||
9c54873b VV |
3801 | static int devlink_nl_cmd_port_param_set_doit(struct sk_buff *skb, |
3802 | struct genl_info *info) | |
3803 | { | |
3804 | struct devlink_port *devlink_port = info->user_ptr[0]; | |
3805 | ||
3806 | return __devlink_nl_cmd_param_set_doit(devlink_port->devlink, | |
c1e5786d VV |
3807 | devlink_port->index, |
3808 | &devlink_port->param_list, info, | |
3809 | DEVLINK_CMD_PORT_PARAM_NEW); | |
9c54873b VV |
3810 | } |
3811 | ||
a006d467 AV |
3812 | static int devlink_nl_region_snapshot_id_put(struct sk_buff *msg, |
3813 | struct devlink *devlink, | |
3814 | struct devlink_snapshot *snapshot) | |
3815 | { | |
3816 | struct nlattr *snap_attr; | |
3817 | int err; | |
3818 | ||
ae0be8de | 3819 | snap_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_SNAPSHOT); |
a006d467 AV |
3820 | if (!snap_attr) |
3821 | return -EINVAL; | |
3822 | ||
3823 | err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID, snapshot->id); | |
3824 | if (err) | |
3825 | goto nla_put_failure; | |
3826 | ||
3827 | nla_nest_end(msg, snap_attr); | |
3828 | return 0; | |
3829 | ||
3830 | nla_put_failure: | |
3831 | nla_nest_cancel(msg, snap_attr); | |
3832 | return err; | |
3833 | } | |
3834 | ||
3835 | static int devlink_nl_region_snapshots_id_put(struct sk_buff *msg, | |
3836 | struct devlink *devlink, | |
3837 | struct devlink_region *region) | |
3838 | { | |
3839 | struct devlink_snapshot *snapshot; | |
3840 | struct nlattr *snapshots_attr; | |
3841 | int err; | |
3842 | ||
ae0be8de MK |
3843 | snapshots_attr = nla_nest_start_noflag(msg, |
3844 | DEVLINK_ATTR_REGION_SNAPSHOTS); | |
a006d467 AV |
3845 | if (!snapshots_attr) |
3846 | return -EINVAL; | |
3847 | ||
3848 | list_for_each_entry(snapshot, ®ion->snapshot_list, list) { | |
3849 | err = devlink_nl_region_snapshot_id_put(msg, devlink, snapshot); | |
3850 | if (err) | |
3851 | goto nla_put_failure; | |
3852 | } | |
3853 | ||
3854 | nla_nest_end(msg, snapshots_attr); | |
3855 | return 0; | |
3856 | ||
3857 | nla_put_failure: | |
3858 | nla_nest_cancel(msg, snapshots_attr); | |
3859 | return err; | |
3860 | } | |
3861 | ||
d8db7ea5 AV |
3862 | static int devlink_nl_region_fill(struct sk_buff *msg, struct devlink *devlink, |
3863 | enum devlink_command cmd, u32 portid, | |
3864 | u32 seq, int flags, | |
3865 | struct devlink_region *region) | |
3866 | { | |
3867 | void *hdr; | |
3868 | int err; | |
3869 | ||
3870 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
3871 | if (!hdr) | |
3872 | return -EMSGSIZE; | |
3873 | ||
3874 | err = devlink_nl_put_handle(msg, devlink); | |
3875 | if (err) | |
3876 | goto nla_put_failure; | |
3877 | ||
e8937681 | 3878 | err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME, region->ops->name); |
d8db7ea5 AV |
3879 | if (err) |
3880 | goto nla_put_failure; | |
3881 | ||
3882 | err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE, | |
3883 | region->size, | |
3884 | DEVLINK_ATTR_PAD); | |
3885 | if (err) | |
3886 | goto nla_put_failure; | |
3887 | ||
a006d467 AV |
3888 | err = devlink_nl_region_snapshots_id_put(msg, devlink, region); |
3889 | if (err) | |
3890 | goto nla_put_failure; | |
3891 | ||
d8db7ea5 AV |
3892 | genlmsg_end(msg, hdr); |
3893 | return 0; | |
3894 | ||
3895 | nla_put_failure: | |
3896 | genlmsg_cancel(msg, hdr); | |
3897 | return err; | |
3898 | } | |
3899 | ||
dd86fec7 JK |
3900 | static struct sk_buff * |
3901 | devlink_nl_region_notify_build(struct devlink_region *region, | |
3902 | struct devlink_snapshot *snapshot, | |
3903 | enum devlink_command cmd, u32 portid, u32 seq) | |
866319bb AV |
3904 | { |
3905 | struct devlink *devlink = region->devlink; | |
3906 | struct sk_buff *msg; | |
3907 | void *hdr; | |
3908 | int err; | |
3909 | ||
866319bb AV |
3910 | |
3911 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
3912 | if (!msg) | |
dd86fec7 | 3913 | return ERR_PTR(-ENOMEM); |
866319bb | 3914 | |
dd86fec7 JK |
3915 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, 0, cmd); |
3916 | if (!hdr) { | |
3917 | err = -EMSGSIZE; | |
866319bb | 3918 | goto out_free_msg; |
dd86fec7 | 3919 | } |
866319bb AV |
3920 | |
3921 | err = devlink_nl_put_handle(msg, devlink); | |
3922 | if (err) | |
3923 | goto out_cancel_msg; | |
3924 | ||
3925 | err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME, | |
e8937681 | 3926 | region->ops->name); |
866319bb AV |
3927 | if (err) |
3928 | goto out_cancel_msg; | |
3929 | ||
3930 | if (snapshot) { | |
3931 | err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID, | |
3932 | snapshot->id); | |
3933 | if (err) | |
3934 | goto out_cancel_msg; | |
3935 | } else { | |
3936 | err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE, | |
3937 | region->size, DEVLINK_ATTR_PAD); | |
3938 | if (err) | |
3939 | goto out_cancel_msg; | |
3940 | } | |
3941 | genlmsg_end(msg, hdr); | |
3942 | ||
dd86fec7 | 3943 | return msg; |
866319bb AV |
3944 | |
3945 | out_cancel_msg: | |
3946 | genlmsg_cancel(msg, hdr); | |
3947 | out_free_msg: | |
3948 | nlmsg_free(msg); | |
dd86fec7 JK |
3949 | return ERR_PTR(err); |
3950 | } | |
3951 | ||
3952 | static void devlink_nl_region_notify(struct devlink_region *region, | |
3953 | struct devlink_snapshot *snapshot, | |
3954 | enum devlink_command cmd) | |
3955 | { | |
3956 | struct devlink *devlink = region->devlink; | |
3957 | struct sk_buff *msg; | |
3958 | ||
3959 | WARN_ON(cmd != DEVLINK_CMD_REGION_NEW && cmd != DEVLINK_CMD_REGION_DEL); | |
3960 | ||
3961 | msg = devlink_nl_region_notify_build(region, snapshot, cmd, 0, 0); | |
3962 | if (IS_ERR(msg)) | |
3963 | return; | |
3964 | ||
3965 | genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), | |
3966 | msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL); | |
866319bb AV |
3967 | } |
3968 | ||
12102436 JK |
3969 | /** |
3970 | * __devlink_snapshot_id_increment - Increment number of snapshots using an id | |
3971 | * @devlink: devlink instance | |
3972 | * @id: the snapshot id | |
3973 | * | |
3974 | * Track when a new snapshot begins using an id. Load the count for the | |
3975 | * given id from the snapshot xarray, increment it, and store it back. | |
3976 | * | |
3977 | * Called when a new snapshot is created with the given id. | |
3978 | * | |
3979 | * The id *must* have been previously allocated by | |
3980 | * devlink_region_snapshot_id_get(). | |
3981 | * | |
3982 | * Returns 0 on success, or an error on failure. | |
3983 | */ | |
3984 | static int __devlink_snapshot_id_increment(struct devlink *devlink, u32 id) | |
3985 | { | |
3986 | unsigned long count; | |
3987 | void *p; | |
3988 | ||
3989 | lockdep_assert_held(&devlink->lock); | |
3990 | ||
3991 | p = xa_load(&devlink->snapshot_ids, id); | |
3992 | if (WARN_ON(!p)) | |
3993 | return -EINVAL; | |
3994 | ||
3995 | if (WARN_ON(!xa_is_value(p))) | |
3996 | return -EINVAL; | |
3997 | ||
3998 | count = xa_to_value(p); | |
3999 | count++; | |
4000 | ||
4001 | return xa_err(xa_store(&devlink->snapshot_ids, id, xa_mk_value(count), | |
4002 | GFP_KERNEL)); | |
4003 | } | |
4004 | ||
4005 | /** | |
4006 | * __devlink_snapshot_id_decrement - Decrease number of snapshots using an id | |
4007 | * @devlink: devlink instance | |
4008 | * @id: the snapshot id | |
4009 | * | |
4010 | * Track when a snapshot is deleted and stops using an id. Load the count | |
4011 | * for the given id from the snapshot xarray, decrement it, and store it | |
4012 | * back. | |
4013 | * | |
4014 | * If the count reaches zero, erase this id from the xarray, freeing it | |
4015 | * up for future re-use by devlink_region_snapshot_id_get(). | |
4016 | * | |
4017 | * Called when a snapshot using the given id is deleted, and when the | |
4018 | * initial allocator of the id is finished using it. | |
4019 | */ | |
4020 | static void __devlink_snapshot_id_decrement(struct devlink *devlink, u32 id) | |
4021 | { | |
4022 | unsigned long count; | |
4023 | void *p; | |
4024 | ||
4025 | lockdep_assert_held(&devlink->lock); | |
4026 | ||
4027 | p = xa_load(&devlink->snapshot_ids, id); | |
4028 | if (WARN_ON(!p)) | |
4029 | return; | |
4030 | ||
4031 | if (WARN_ON(!xa_is_value(p))) | |
4032 | return; | |
4033 | ||
4034 | count = xa_to_value(p); | |
4035 | ||
4036 | if (count > 1) { | |
4037 | count--; | |
4038 | xa_store(&devlink->snapshot_ids, id, xa_mk_value(count), | |
4039 | GFP_KERNEL); | |
4040 | } else { | |
4041 | /* If this was the last user, we can erase this id */ | |
4042 | xa_erase(&devlink->snapshot_ids, id); | |
4043 | } | |
4044 | } | |
4045 | ||
b9a17abf JK |
4046 | /** |
4047 | * __devlink_snapshot_id_insert - Insert a specific snapshot ID | |
4048 | * @devlink: devlink instance | |
4049 | * @id: the snapshot id | |
4050 | * | |
4051 | * Mark the given snapshot id as used by inserting a zero value into the | |
4052 | * snapshot xarray. | |
4053 | * | |
4054 | * This must be called while holding the devlink instance lock. Unlike | |
4055 | * devlink_snapshot_id_get, the initial reference count is zero, not one. | |
4056 | * It is expected that the id will immediately be used before | |
4057 | * releasing the devlink instance lock. | |
4058 | * | |
4059 | * Returns zero on success, or an error code if the snapshot id could not | |
4060 | * be inserted. | |
4061 | */ | |
4062 | static int __devlink_snapshot_id_insert(struct devlink *devlink, u32 id) | |
4063 | { | |
4064 | lockdep_assert_held(&devlink->lock); | |
4065 | ||
bd71ea60 | 4066 | if (xa_load(&devlink->snapshot_ids, id)) |
b9a17abf JK |
4067 | return -EEXIST; |
4068 | ||
4069 | return xa_err(xa_store(&devlink->snapshot_ids, id, xa_mk_value(0), | |
4070 | GFP_KERNEL)); | |
4071 | } | |
4072 | ||
7000108f JK |
4073 | /** |
4074 | * __devlink_region_snapshot_id_get - get snapshot ID | |
4075 | * @devlink: devlink instance | |
7ef19d3b | 4076 | * @id: storage to return snapshot id |
7000108f | 4077 | * |
7ef19d3b JK |
4078 | * Allocates a new snapshot id. Returns zero on success, or a negative |
4079 | * error on failure. Must be called while holding the devlink instance | |
4080 | * lock. | |
12102436 JK |
4081 | * |
4082 | * Snapshot IDs are tracked using an xarray which stores the number of | |
4083 | * users of the snapshot id. | |
4084 | * | |
4085 | * Note that the caller of this function counts as a 'user', in order to | |
4086 | * avoid race conditions. The caller must release its hold on the | |
4087 | * snapshot by using devlink_region_snapshot_id_put. | |
7000108f | 4088 | */ |
7ef19d3b | 4089 | static int __devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id) |
7000108f JK |
4090 | { |
4091 | lockdep_assert_held(&devlink->lock); | |
7ef19d3b | 4092 | |
12102436 JK |
4093 | return xa_alloc(&devlink->snapshot_ids, id, xa_mk_value(1), |
4094 | xa_limit_32b, GFP_KERNEL); | |
7000108f JK |
4095 | } |
4096 | ||
cf80faee JK |
4097 | /** |
4098 | * __devlink_region_snapshot_create - create a new snapshot | |
4099 | * This will add a new snapshot of a region. The snapshot | |
4100 | * will be stored on the region struct and can be accessed | |
4101 | * from devlink. This is useful for future analyses of snapshots. | |
4102 | * Multiple snapshots can be created on a region. | |
4103 | * The @snapshot_id should be obtained using the getter function. | |
4104 | * | |
4105 | * Must be called only while holding the devlink instance lock. | |
4106 | * | |
4107 | * @region: devlink region of the snapshot | |
4108 | * @data: snapshot data | |
4109 | * @snapshot_id: snapshot id to be created | |
4110 | */ | |
4111 | static int | |
4112 | __devlink_region_snapshot_create(struct devlink_region *region, | |
4113 | u8 *data, u32 snapshot_id) | |
4114 | { | |
4115 | struct devlink *devlink = region->devlink; | |
4116 | struct devlink_snapshot *snapshot; | |
12102436 | 4117 | int err; |
cf80faee JK |
4118 | |
4119 | lockdep_assert_held(&devlink->lock); | |
4120 | ||
4121 | /* check if region can hold one more snapshot */ | |
4122 | if (region->cur_snapshots == region->max_snapshots) | |
47a39f61 | 4123 | return -ENOSPC; |
cf80faee JK |
4124 | |
4125 | if (devlink_region_snapshot_get_by_id(region, snapshot_id)) | |
4126 | return -EEXIST; | |
4127 | ||
4128 | snapshot = kzalloc(sizeof(*snapshot), GFP_KERNEL); | |
4129 | if (!snapshot) | |
4130 | return -ENOMEM; | |
4131 | ||
12102436 JK |
4132 | err = __devlink_snapshot_id_increment(devlink, snapshot_id); |
4133 | if (err) | |
4134 | goto err_snapshot_id_increment; | |
4135 | ||
cf80faee JK |
4136 | snapshot->id = snapshot_id; |
4137 | snapshot->region = region; | |
4138 | snapshot->data = data; | |
4139 | ||
4140 | list_add_tail(&snapshot->list, ®ion->snapshot_list); | |
4141 | ||
4142 | region->cur_snapshots++; | |
4143 | ||
4144 | devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_NEW); | |
4145 | return 0; | |
12102436 JK |
4146 | |
4147 | err_snapshot_id_increment: | |
4148 | kfree(snapshot); | |
4149 | return err; | |
cf80faee JK |
4150 | } |
4151 | ||
92b49822 JP |
4152 | static void devlink_region_snapshot_del(struct devlink_region *region, |
4153 | struct devlink_snapshot *snapshot) | |
4154 | { | |
12102436 JK |
4155 | struct devlink *devlink = region->devlink; |
4156 | ||
4157 | lockdep_assert_held(&devlink->lock); | |
4158 | ||
92b49822 JP |
4159 | devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_DEL); |
4160 | region->cur_snapshots--; | |
4161 | list_del(&snapshot->list); | |
a0a09f6b | 4162 | region->ops->destructor(snapshot->data); |
12102436 | 4163 | __devlink_snapshot_id_decrement(devlink, snapshot->id); |
92b49822 JP |
4164 | kfree(snapshot); |
4165 | } | |
4166 | ||
d8db7ea5 AV |
4167 | static int devlink_nl_cmd_region_get_doit(struct sk_buff *skb, |
4168 | struct genl_info *info) | |
4169 | { | |
4170 | struct devlink *devlink = info->user_ptr[0]; | |
4171 | struct devlink_region *region; | |
4172 | const char *region_name; | |
4173 | struct sk_buff *msg; | |
4174 | int err; | |
4175 | ||
4176 | if (!info->attrs[DEVLINK_ATTR_REGION_NAME]) | |
4177 | return -EINVAL; | |
4178 | ||
4179 | region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]); | |
4180 | region = devlink_region_get_by_name(devlink, region_name); | |
4181 | if (!region) | |
4182 | return -EINVAL; | |
4183 | ||
4184 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
4185 | if (!msg) | |
4186 | return -ENOMEM; | |
4187 | ||
4188 | err = devlink_nl_region_fill(msg, devlink, DEVLINK_CMD_REGION_GET, | |
4189 | info->snd_portid, info->snd_seq, 0, | |
4190 | region); | |
4191 | if (err) { | |
4192 | nlmsg_free(msg); | |
4193 | return err; | |
4194 | } | |
4195 | ||
4196 | return genlmsg_reply(msg, info); | |
4197 | } | |
4198 | ||
4199 | static int devlink_nl_cmd_region_get_dumpit(struct sk_buff *msg, | |
4200 | struct netlink_callback *cb) | |
4201 | { | |
4202 | struct devlink_region *region; | |
4203 | struct devlink *devlink; | |
4204 | int start = cb->args[0]; | |
4205 | int idx = 0; | |
4206 | int err; | |
4207 | ||
4208 | mutex_lock(&devlink_mutex); | |
4209 | list_for_each_entry(devlink, &devlink_list, list) { | |
4210 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) | |
4211 | continue; | |
4212 | ||
4213 | mutex_lock(&devlink->lock); | |
4214 | list_for_each_entry(region, &devlink->region_list, list) { | |
4215 | if (idx < start) { | |
4216 | idx++; | |
4217 | continue; | |
4218 | } | |
4219 | err = devlink_nl_region_fill(msg, devlink, | |
4220 | DEVLINK_CMD_REGION_GET, | |
4221 | NETLINK_CB(cb->skb).portid, | |
4222 | cb->nlh->nlmsg_seq, | |
4223 | NLM_F_MULTI, region); | |
4224 | if (err) { | |
4225 | mutex_unlock(&devlink->lock); | |
4226 | goto out; | |
4227 | } | |
4228 | idx++; | |
4229 | } | |
4230 | mutex_unlock(&devlink->lock); | |
4231 | } | |
4232 | out: | |
4233 | mutex_unlock(&devlink_mutex); | |
4234 | cb->args[0] = idx; | |
4235 | return msg->len; | |
4236 | } | |
4237 | ||
866319bb AV |
4238 | static int devlink_nl_cmd_region_del(struct sk_buff *skb, |
4239 | struct genl_info *info) | |
4240 | { | |
4241 | struct devlink *devlink = info->user_ptr[0]; | |
4242 | struct devlink_snapshot *snapshot; | |
4243 | struct devlink_region *region; | |
4244 | const char *region_name; | |
4245 | u32 snapshot_id; | |
4246 | ||
4247 | if (!info->attrs[DEVLINK_ATTR_REGION_NAME] || | |
4248 | !info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]) | |
4249 | return -EINVAL; | |
4250 | ||
4251 | region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]); | |
4252 | snapshot_id = nla_get_u32(info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]); | |
4253 | ||
4254 | region = devlink_region_get_by_name(devlink, region_name); | |
4255 | if (!region) | |
4256 | return -EINVAL; | |
4257 | ||
4258 | snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id); | |
4259 | if (!snapshot) | |
4260 | return -EINVAL; | |
4261 | ||
92b49822 | 4262 | devlink_region_snapshot_del(region, snapshot); |
866319bb AV |
4263 | return 0; |
4264 | } | |
4265 | ||
b9a17abf JK |
4266 | static int |
4267 | devlink_nl_cmd_region_new(struct sk_buff *skb, struct genl_info *info) | |
4268 | { | |
4269 | struct devlink *devlink = info->user_ptr[0]; | |
043b3e22 JK |
4270 | struct devlink_snapshot *snapshot; |
4271 | struct nlattr *snapshot_id_attr; | |
b9a17abf JK |
4272 | struct devlink_region *region; |
4273 | const char *region_name; | |
4274 | u32 snapshot_id; | |
4275 | u8 *data; | |
4276 | int err; | |
4277 | ||
4278 | if (!info->attrs[DEVLINK_ATTR_REGION_NAME]) { | |
4279 | NL_SET_ERR_MSG_MOD(info->extack, "No region name provided"); | |
4280 | return -EINVAL; | |
4281 | } | |
4282 | ||
b9a17abf JK |
4283 | region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]); |
4284 | region = devlink_region_get_by_name(devlink, region_name); | |
4285 | if (!region) { | |
4286 | NL_SET_ERR_MSG_MOD(info->extack, "The requested region does not exist"); | |
4287 | return -EINVAL; | |
4288 | } | |
4289 | ||
4290 | if (!region->ops->snapshot) { | |
4291 | NL_SET_ERR_MSG_MOD(info->extack, "The requested region does not support taking an immediate snapshot"); | |
4292 | return -EOPNOTSUPP; | |
4293 | } | |
4294 | ||
4295 | if (region->cur_snapshots == region->max_snapshots) { | |
4296 | NL_SET_ERR_MSG_MOD(info->extack, "The region has reached the maximum number of stored snapshots"); | |
4297 | return -ENOSPC; | |
4298 | } | |
4299 | ||
043b3e22 JK |
4300 | snapshot_id_attr = info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]; |
4301 | if (snapshot_id_attr) { | |
4302 | snapshot_id = nla_get_u32(snapshot_id_attr); | |
b9a17abf | 4303 | |
043b3e22 JK |
4304 | if (devlink_region_snapshot_get_by_id(region, snapshot_id)) { |
4305 | NL_SET_ERR_MSG_MOD(info->extack, "The requested snapshot id is already in use"); | |
4306 | return -EEXIST; | |
4307 | } | |
b9a17abf | 4308 | |
043b3e22 JK |
4309 | err = __devlink_snapshot_id_insert(devlink, snapshot_id); |
4310 | if (err) | |
4311 | return err; | |
4312 | } else { | |
4313 | err = __devlink_region_snapshot_id_get(devlink, &snapshot_id); | |
4314 | if (err) { | |
4315 | NL_SET_ERR_MSG_MOD(info->extack, "Failed to allocate a new snapshot id"); | |
4316 | return err; | |
4317 | } | |
4318 | } | |
b9a17abf JK |
4319 | |
4320 | err = region->ops->snapshot(devlink, info->extack, &data); | |
4321 | if (err) | |
4322 | goto err_snapshot_capture; | |
4323 | ||
4324 | err = __devlink_region_snapshot_create(region, data, snapshot_id); | |
4325 | if (err) | |
4326 | goto err_snapshot_create; | |
4327 | ||
043b3e22 JK |
4328 | if (!snapshot_id_attr) { |
4329 | struct sk_buff *msg; | |
4330 | ||
4331 | snapshot = devlink_region_snapshot_get_by_id(region, | |
4332 | snapshot_id); | |
4333 | if (WARN_ON(!snapshot)) | |
4334 | return -EINVAL; | |
4335 | ||
4336 | msg = devlink_nl_region_notify_build(region, snapshot, | |
4337 | DEVLINK_CMD_REGION_NEW, | |
4338 | info->snd_portid, | |
4339 | info->snd_seq); | |
4340 | err = PTR_ERR_OR_ZERO(msg); | |
4341 | if (err) | |
4342 | goto err_notify; | |
4343 | ||
4344 | err = genlmsg_reply(msg, info); | |
4345 | if (err) | |
4346 | goto err_notify; | |
4347 | } | |
4348 | ||
b9a17abf JK |
4349 | return 0; |
4350 | ||
4351 | err_snapshot_create: | |
4352 | region->ops->destructor(data); | |
4353 | err_snapshot_capture: | |
4354 | __devlink_snapshot_id_decrement(devlink, snapshot_id); | |
4355 | return err; | |
043b3e22 JK |
4356 | |
4357 | err_notify: | |
4358 | devlink_region_snapshot_del(region, snapshot); | |
4359 | return err; | |
b9a17abf JK |
4360 | } |
4361 | ||
4e54795a AV |
4362 | static int devlink_nl_cmd_region_read_chunk_fill(struct sk_buff *msg, |
4363 | struct devlink *devlink, | |
4364 | u8 *chunk, u32 chunk_size, | |
4365 | u64 addr) | |
4366 | { | |
4367 | struct nlattr *chunk_attr; | |
4368 | int err; | |
4369 | ||
ae0be8de | 4370 | chunk_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_CHUNK); |
4e54795a AV |
4371 | if (!chunk_attr) |
4372 | return -EINVAL; | |
4373 | ||
4374 | err = nla_put(msg, DEVLINK_ATTR_REGION_CHUNK_DATA, chunk_size, chunk); | |
4375 | if (err) | |
4376 | goto nla_put_failure; | |
4377 | ||
4378 | err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_CHUNK_ADDR, addr, | |
4379 | DEVLINK_ATTR_PAD); | |
4380 | if (err) | |
4381 | goto nla_put_failure; | |
4382 | ||
4383 | nla_nest_end(msg, chunk_attr); | |
4384 | return 0; | |
4385 | ||
4386 | nla_put_failure: | |
4387 | nla_nest_cancel(msg, chunk_attr); | |
4388 | return err; | |
4389 | } | |
4390 | ||
4391 | #define DEVLINK_REGION_READ_CHUNK_SIZE 256 | |
4392 | ||
4393 | static int devlink_nl_region_read_snapshot_fill(struct sk_buff *skb, | |
4394 | struct devlink *devlink, | |
4395 | struct devlink_region *region, | |
4396 | struct nlattr **attrs, | |
4397 | u64 start_offset, | |
4398 | u64 end_offset, | |
4e54795a AV |
4399 | u64 *new_offset) |
4400 | { | |
4401 | struct devlink_snapshot *snapshot; | |
4402 | u64 curr_offset = start_offset; | |
4403 | u32 snapshot_id; | |
4404 | int err = 0; | |
4405 | ||
4406 | *new_offset = start_offset; | |
4407 | ||
4408 | snapshot_id = nla_get_u32(attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]); | |
4409 | snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id); | |
4410 | if (!snapshot) | |
4411 | return -EINVAL; | |
4412 | ||
4e54795a AV |
4413 | while (curr_offset < end_offset) { |
4414 | u32 data_size; | |
4415 | u8 *data; | |
4416 | ||
4417 | if (end_offset - curr_offset < DEVLINK_REGION_READ_CHUNK_SIZE) | |
4418 | data_size = end_offset - curr_offset; | |
4419 | else | |
4420 | data_size = DEVLINK_REGION_READ_CHUNK_SIZE; | |
4421 | ||
4422 | data = &snapshot->data[curr_offset]; | |
4423 | err = devlink_nl_cmd_region_read_chunk_fill(skb, devlink, | |
4424 | data, data_size, | |
4425 | curr_offset); | |
4426 | if (err) | |
4427 | break; | |
4428 | ||
4429 | curr_offset += data_size; | |
4430 | } | |
4431 | *new_offset = curr_offset; | |
4432 | ||
4433 | return err; | |
4434 | } | |
4435 | ||
4436 | static int devlink_nl_cmd_region_read_dumpit(struct sk_buff *skb, | |
4437 | struct netlink_callback *cb) | |
4438 | { | |
ee85da53 | 4439 | const struct genl_dumpit_info *info = genl_dumpit_info(cb); |
5a46b062 | 4440 | u64 ret_offset, start_offset, end_offset = U64_MAX; |
ee85da53 | 4441 | struct nlattr **attrs = info->attrs; |
4e54795a AV |
4442 | struct devlink_region *region; |
4443 | struct nlattr *chunks_attr; | |
4444 | const char *region_name; | |
4445 | struct devlink *devlink; | |
4e54795a AV |
4446 | void *hdr; |
4447 | int err; | |
4448 | ||
4449 | start_offset = *((u64 *)&cb->args[0]); | |
4450 | ||
dac7c08f | 4451 | mutex_lock(&devlink_mutex); |
4e54795a | 4452 | devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs); |
fdd41ec2 PP |
4453 | if (IS_ERR(devlink)) { |
4454 | err = PTR_ERR(devlink); | |
dac7c08f | 4455 | goto out_dev; |
fdd41ec2 | 4456 | } |
4e54795a | 4457 | |
4e54795a AV |
4458 | mutex_lock(&devlink->lock); |
4459 | ||
4460 | if (!attrs[DEVLINK_ATTR_REGION_NAME] || | |
fdd41ec2 PP |
4461 | !attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]) { |
4462 | err = -EINVAL; | |
4e54795a | 4463 | goto out_unlock; |
fdd41ec2 | 4464 | } |
4e54795a AV |
4465 | |
4466 | region_name = nla_data(attrs[DEVLINK_ATTR_REGION_NAME]); | |
4467 | region = devlink_region_get_by_name(devlink, region_name); | |
fdd41ec2 PP |
4468 | if (!region) { |
4469 | err = -EINVAL; | |
4e54795a | 4470 | goto out_unlock; |
fdd41ec2 | 4471 | } |
4e54795a | 4472 | |
5a46b062 JK |
4473 | if (attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR] && |
4474 | attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]) { | |
4475 | if (!start_offset) | |
4476 | start_offset = | |
4477 | nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]); | |
4478 | ||
4479 | end_offset = nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]); | |
4480 | end_offset += nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]); | |
4481 | } | |
4482 | ||
4483 | if (end_offset > region->size) | |
4484 | end_offset = region->size; | |
4485 | ||
d5b90e99 | 4486 | /* return 0 if there is no further data to read */ |
5a46b062 | 4487 | if (start_offset == end_offset) { |
d5b90e99 JK |
4488 | err = 0; |
4489 | goto out_unlock; | |
4490 | } | |
4491 | ||
4e54795a AV |
4492 | hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, |
4493 | &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI, | |
4494 | DEVLINK_CMD_REGION_READ); | |
fdd41ec2 PP |
4495 | if (!hdr) { |
4496 | err = -EMSGSIZE; | |
4e54795a | 4497 | goto out_unlock; |
fdd41ec2 | 4498 | } |
4e54795a AV |
4499 | |
4500 | err = devlink_nl_put_handle(skb, devlink); | |
4501 | if (err) | |
4502 | goto nla_put_failure; | |
4503 | ||
4504 | err = nla_put_string(skb, DEVLINK_ATTR_REGION_NAME, region_name); | |
4505 | if (err) | |
4506 | goto nla_put_failure; | |
4507 | ||
ae0be8de | 4508 | chunks_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_REGION_CHUNKS); |
fdd41ec2 PP |
4509 | if (!chunks_attr) { |
4510 | err = -EMSGSIZE; | |
4e54795a | 4511 | goto nla_put_failure; |
fdd41ec2 | 4512 | } |
4e54795a | 4513 | |
4e54795a AV |
4514 | err = devlink_nl_region_read_snapshot_fill(skb, devlink, |
4515 | region, attrs, | |
4516 | start_offset, | |
5a46b062 | 4517 | end_offset, &ret_offset); |
4e54795a AV |
4518 | |
4519 | if (err && err != -EMSGSIZE) | |
4520 | goto nla_put_failure; | |
4521 | ||
4522 | /* Check if there was any progress done to prevent infinite loop */ | |
fdd41ec2 PP |
4523 | if (ret_offset == start_offset) { |
4524 | err = -EINVAL; | |
4e54795a | 4525 | goto nla_put_failure; |
fdd41ec2 | 4526 | } |
4e54795a AV |
4527 | |
4528 | *((u64 *)&cb->args[0]) = ret_offset; | |
4529 | ||
4530 | nla_nest_end(skb, chunks_attr); | |
4531 | genlmsg_end(skb, hdr); | |
4532 | mutex_unlock(&devlink->lock); | |
4533 | mutex_unlock(&devlink_mutex); | |
4534 | ||
4535 | return skb->len; | |
4536 | ||
4537 | nla_put_failure: | |
4538 | genlmsg_cancel(skb, hdr); | |
4539 | out_unlock: | |
4540 | mutex_unlock(&devlink->lock); | |
dac7c08f | 4541 | out_dev: |
4e54795a | 4542 | mutex_unlock(&devlink_mutex); |
fdd41ec2 | 4543 | return err; |
4e54795a AV |
4544 | } |
4545 | ||
f9cf2288 JK |
4546 | struct devlink_info_req { |
4547 | struct sk_buff *msg; | |
4548 | }; | |
4549 | ||
4550 | int devlink_info_driver_name_put(struct devlink_info_req *req, const char *name) | |
4551 | { | |
4552 | return nla_put_string(req->msg, DEVLINK_ATTR_INFO_DRIVER_NAME, name); | |
4553 | } | |
4554 | EXPORT_SYMBOL_GPL(devlink_info_driver_name_put); | |
4555 | ||
4556 | int devlink_info_serial_number_put(struct devlink_info_req *req, const char *sn) | |
4557 | { | |
4558 | return nla_put_string(req->msg, DEVLINK_ATTR_INFO_SERIAL_NUMBER, sn); | |
4559 | } | |
4560 | EXPORT_SYMBOL_GPL(devlink_info_serial_number_put); | |
4561 | ||
b5872cd0 VV |
4562 | int devlink_info_board_serial_number_put(struct devlink_info_req *req, |
4563 | const char *bsn) | |
4564 | { | |
4565 | return nla_put_string(req->msg, DEVLINK_ATTR_INFO_BOARD_SERIAL_NUMBER, | |
4566 | bsn); | |
4567 | } | |
4568 | EXPORT_SYMBOL_GPL(devlink_info_board_serial_number_put); | |
4569 | ||
fc6fae7d JK |
4570 | static int devlink_info_version_put(struct devlink_info_req *req, int attr, |
4571 | const char *version_name, | |
4572 | const char *version_value) | |
4573 | { | |
4574 | struct nlattr *nest; | |
4575 | int err; | |
4576 | ||
ae0be8de | 4577 | nest = nla_nest_start_noflag(req->msg, attr); |
fc6fae7d JK |
4578 | if (!nest) |
4579 | return -EMSGSIZE; | |
4580 | ||
4581 | err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_NAME, | |
4582 | version_name); | |
4583 | if (err) | |
4584 | goto nla_put_failure; | |
4585 | ||
4586 | err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_VALUE, | |
4587 | version_value); | |
4588 | if (err) | |
4589 | goto nla_put_failure; | |
4590 | ||
4591 | nla_nest_end(req->msg, nest); | |
4592 | ||
4593 | return 0; | |
4594 | ||
4595 | nla_put_failure: | |
4596 | nla_nest_cancel(req->msg, nest); | |
4597 | return err; | |
4598 | } | |
4599 | ||
4600 | int devlink_info_version_fixed_put(struct devlink_info_req *req, | |
4601 | const char *version_name, | |
4602 | const char *version_value) | |
4603 | { | |
4604 | return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_FIXED, | |
4605 | version_name, version_value); | |
4606 | } | |
4607 | EXPORT_SYMBOL_GPL(devlink_info_version_fixed_put); | |
4608 | ||
4609 | int devlink_info_version_stored_put(struct devlink_info_req *req, | |
4610 | const char *version_name, | |
4611 | const char *version_value) | |
4612 | { | |
4613 | return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_STORED, | |
4614 | version_name, version_value); | |
4615 | } | |
4616 | EXPORT_SYMBOL_GPL(devlink_info_version_stored_put); | |
4617 | ||
4618 | int devlink_info_version_running_put(struct devlink_info_req *req, | |
4619 | const char *version_name, | |
4620 | const char *version_value) | |
4621 | { | |
4622 | return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_RUNNING, | |
4623 | version_name, version_value); | |
4624 | } | |
4625 | EXPORT_SYMBOL_GPL(devlink_info_version_running_put); | |
4626 | ||
f9cf2288 JK |
4627 | static int |
4628 | devlink_nl_info_fill(struct sk_buff *msg, struct devlink *devlink, | |
4629 | enum devlink_command cmd, u32 portid, | |
4630 | u32 seq, int flags, struct netlink_ext_ack *extack) | |
4631 | { | |
4632 | struct devlink_info_req req; | |
4633 | void *hdr; | |
4634 | int err; | |
4635 | ||
4636 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
4637 | if (!hdr) | |
4638 | return -EMSGSIZE; | |
4639 | ||
4640 | err = -EMSGSIZE; | |
4641 | if (devlink_nl_put_handle(msg, devlink)) | |
4642 | goto err_cancel_msg; | |
4643 | ||
4644 | req.msg = msg; | |
4645 | err = devlink->ops->info_get(devlink, &req, extack); | |
4646 | if (err) | |
4647 | goto err_cancel_msg; | |
4648 | ||
4649 | genlmsg_end(msg, hdr); | |
4650 | return 0; | |
4651 | ||
4652 | err_cancel_msg: | |
4653 | genlmsg_cancel(msg, hdr); | |
4654 | return err; | |
4655 | } | |
4656 | ||
4657 | static int devlink_nl_cmd_info_get_doit(struct sk_buff *skb, | |
4658 | struct genl_info *info) | |
4659 | { | |
4660 | struct devlink *devlink = info->user_ptr[0]; | |
4661 | struct sk_buff *msg; | |
4662 | int err; | |
4663 | ||
be6fe1d8 | 4664 | if (!devlink->ops->info_get) |
f9cf2288 JK |
4665 | return -EOPNOTSUPP; |
4666 | ||
4667 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
4668 | if (!msg) | |
4669 | return -ENOMEM; | |
4670 | ||
4671 | err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET, | |
4672 | info->snd_portid, info->snd_seq, 0, | |
4673 | info->extack); | |
4674 | if (err) { | |
4675 | nlmsg_free(msg); | |
4676 | return err; | |
4677 | } | |
4678 | ||
4679 | return genlmsg_reply(msg, info); | |
4680 | } | |
4681 | ||
4682 | static int devlink_nl_cmd_info_get_dumpit(struct sk_buff *msg, | |
4683 | struct netlink_callback *cb) | |
4684 | { | |
4685 | struct devlink *devlink; | |
4686 | int start = cb->args[0]; | |
4687 | int idx = 0; | |
c62c2cfb | 4688 | int err = 0; |
f9cf2288 JK |
4689 | |
4690 | mutex_lock(&devlink_mutex); | |
4691 | list_for_each_entry(devlink, &devlink_list, list) { | |
4692 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) | |
4693 | continue; | |
4694 | if (idx < start) { | |
4695 | idx++; | |
4696 | continue; | |
4697 | } | |
4698 | ||
c493b09b JP |
4699 | if (!devlink->ops->info_get) { |
4700 | idx++; | |
4701 | continue; | |
4702 | } | |
4703 | ||
f9cf2288 JK |
4704 | mutex_lock(&devlink->lock); |
4705 | err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET, | |
4706 | NETLINK_CB(cb->skb).portid, | |
4707 | cb->nlh->nlmsg_seq, NLM_F_MULTI, | |
4708 | cb->extack); | |
4709 | mutex_unlock(&devlink->lock); | |
82274d07 JK |
4710 | if (err == -EOPNOTSUPP) |
4711 | err = 0; | |
4712 | else if (err) | |
f9cf2288 JK |
4713 | break; |
4714 | idx++; | |
4715 | } | |
4716 | mutex_unlock(&devlink_mutex); | |
4717 | ||
c62c2cfb JP |
4718 | if (err != -EMSGSIZE) |
4719 | return err; | |
4720 | ||
f9cf2288 JK |
4721 | cb->args[0] = idx; |
4722 | return msg->len; | |
4723 | } | |
4724 | ||
1db64e87 EBE |
4725 | struct devlink_fmsg_item { |
4726 | struct list_head list; | |
4727 | int attrtype; | |
4728 | u8 nla_type; | |
4729 | u16 len; | |
d2afb41a | 4730 | int value[]; |
1db64e87 EBE |
4731 | }; |
4732 | ||
4733 | struct devlink_fmsg { | |
4734 | struct list_head item_list; | |
573ed90a AL |
4735 | bool putting_binary; /* This flag forces enclosing of binary data |
4736 | * in an array brackets. It forces using | |
4737 | * of designated API: | |
4738 | * devlink_fmsg_binary_pair_nest_start() | |
4739 | * devlink_fmsg_binary_pair_nest_end() | |
4740 | */ | |
1db64e87 EBE |
4741 | }; |
4742 | ||
4743 | static struct devlink_fmsg *devlink_fmsg_alloc(void) | |
4744 | { | |
4745 | struct devlink_fmsg *fmsg; | |
4746 | ||
4747 | fmsg = kzalloc(sizeof(*fmsg), GFP_KERNEL); | |
4748 | if (!fmsg) | |
4749 | return NULL; | |
4750 | ||
4751 | INIT_LIST_HEAD(&fmsg->item_list); | |
4752 | ||
4753 | return fmsg; | |
4754 | } | |
4755 | ||
4756 | static void devlink_fmsg_free(struct devlink_fmsg *fmsg) | |
4757 | { | |
4758 | struct devlink_fmsg_item *item, *tmp; | |
4759 | ||
4760 | list_for_each_entry_safe(item, tmp, &fmsg->item_list, list) { | |
4761 | list_del(&item->list); | |
4762 | kfree(item); | |
4763 | } | |
4764 | kfree(fmsg); | |
4765 | } | |
4766 | ||
4767 | static int devlink_fmsg_nest_common(struct devlink_fmsg *fmsg, | |
4768 | int attrtype) | |
4769 | { | |
4770 | struct devlink_fmsg_item *item; | |
4771 | ||
4772 | item = kzalloc(sizeof(*item), GFP_KERNEL); | |
4773 | if (!item) | |
4774 | return -ENOMEM; | |
4775 | ||
4776 | item->attrtype = attrtype; | |
4777 | list_add_tail(&item->list, &fmsg->item_list); | |
4778 | ||
4779 | return 0; | |
4780 | } | |
4781 | ||
4782 | int devlink_fmsg_obj_nest_start(struct devlink_fmsg *fmsg) | |
4783 | { | |
573ed90a AL |
4784 | if (fmsg->putting_binary) |
4785 | return -EINVAL; | |
4786 | ||
1db64e87 EBE |
4787 | return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_OBJ_NEST_START); |
4788 | } | |
4789 | EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_start); | |
4790 | ||
4791 | static int devlink_fmsg_nest_end(struct devlink_fmsg *fmsg) | |
4792 | { | |
573ed90a AL |
4793 | if (fmsg->putting_binary) |
4794 | return -EINVAL; | |
4795 | ||
1db64e87 EBE |
4796 | return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_NEST_END); |
4797 | } | |
4798 | ||
4799 | int devlink_fmsg_obj_nest_end(struct devlink_fmsg *fmsg) | |
4800 | { | |
573ed90a AL |
4801 | if (fmsg->putting_binary) |
4802 | return -EINVAL; | |
4803 | ||
1db64e87 EBE |
4804 | return devlink_fmsg_nest_end(fmsg); |
4805 | } | |
4806 | EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_end); | |
4807 | ||
4808 | #define DEVLINK_FMSG_MAX_SIZE (GENLMSG_DEFAULT_SIZE - GENL_HDRLEN - NLA_HDRLEN) | |
4809 | ||
4810 | static int devlink_fmsg_put_name(struct devlink_fmsg *fmsg, const char *name) | |
4811 | { | |
4812 | struct devlink_fmsg_item *item; | |
4813 | ||
573ed90a AL |
4814 | if (fmsg->putting_binary) |
4815 | return -EINVAL; | |
4816 | ||
1db64e87 EBE |
4817 | if (strlen(name) + 1 > DEVLINK_FMSG_MAX_SIZE) |
4818 | return -EMSGSIZE; | |
4819 | ||
4820 | item = kzalloc(sizeof(*item) + strlen(name) + 1, GFP_KERNEL); | |
4821 | if (!item) | |
4822 | return -ENOMEM; | |
4823 | ||
4824 | item->nla_type = NLA_NUL_STRING; | |
4825 | item->len = strlen(name) + 1; | |
4826 | item->attrtype = DEVLINK_ATTR_FMSG_OBJ_NAME; | |
4827 | memcpy(&item->value, name, item->len); | |
4828 | list_add_tail(&item->list, &fmsg->item_list); | |
4829 | ||
4830 | return 0; | |
4831 | } | |
4832 | ||
4833 | int devlink_fmsg_pair_nest_start(struct devlink_fmsg *fmsg, const char *name) | |
4834 | { | |
4835 | int err; | |
4836 | ||
573ed90a AL |
4837 | if (fmsg->putting_binary) |
4838 | return -EINVAL; | |
4839 | ||
1db64e87 EBE |
4840 | err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_PAIR_NEST_START); |
4841 | if (err) | |
4842 | return err; | |
4843 | ||
4844 | err = devlink_fmsg_put_name(fmsg, name); | |
4845 | if (err) | |
4846 | return err; | |
4847 | ||
4848 | return 0; | |
4849 | } | |
4850 | EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_start); | |
4851 | ||
4852 | int devlink_fmsg_pair_nest_end(struct devlink_fmsg *fmsg) | |
4853 | { | |
573ed90a AL |
4854 | if (fmsg->putting_binary) |
4855 | return -EINVAL; | |
4856 | ||
1db64e87 EBE |
4857 | return devlink_fmsg_nest_end(fmsg); |
4858 | } | |
4859 | EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_end); | |
4860 | ||
4861 | int devlink_fmsg_arr_pair_nest_start(struct devlink_fmsg *fmsg, | |
4862 | const char *name) | |
4863 | { | |
4864 | int err; | |
4865 | ||
573ed90a AL |
4866 | if (fmsg->putting_binary) |
4867 | return -EINVAL; | |
4868 | ||
1db64e87 EBE |
4869 | err = devlink_fmsg_pair_nest_start(fmsg, name); |
4870 | if (err) | |
4871 | return err; | |
4872 | ||
4873 | err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_ARR_NEST_START); | |
4874 | if (err) | |
4875 | return err; | |
4876 | ||
4877 | return 0; | |
4878 | } | |
4879 | EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_start); | |
4880 | ||
4881 | int devlink_fmsg_arr_pair_nest_end(struct devlink_fmsg *fmsg) | |
4882 | { | |
4883 | int err; | |
4884 | ||
573ed90a AL |
4885 | if (fmsg->putting_binary) |
4886 | return -EINVAL; | |
4887 | ||
1db64e87 EBE |
4888 | err = devlink_fmsg_nest_end(fmsg); |
4889 | if (err) | |
4890 | return err; | |
4891 | ||
4892 | err = devlink_fmsg_nest_end(fmsg); | |
4893 | if (err) | |
4894 | return err; | |
4895 | ||
4896 | return 0; | |
4897 | } | |
4898 | EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_end); | |
4899 | ||
573ed90a AL |
4900 | int devlink_fmsg_binary_pair_nest_start(struct devlink_fmsg *fmsg, |
4901 | const char *name) | |
4902 | { | |
4903 | int err; | |
4904 | ||
4905 | err = devlink_fmsg_arr_pair_nest_start(fmsg, name); | |
4906 | if (err) | |
4907 | return err; | |
4908 | ||
4909 | fmsg->putting_binary = true; | |
4910 | return err; | |
4911 | } | |
4912 | EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_start); | |
4913 | ||
4914 | int devlink_fmsg_binary_pair_nest_end(struct devlink_fmsg *fmsg) | |
4915 | { | |
4916 | if (!fmsg->putting_binary) | |
4917 | return -EINVAL; | |
4918 | ||
4919 | fmsg->putting_binary = false; | |
4920 | return devlink_fmsg_arr_pair_nest_end(fmsg); | |
4921 | } | |
4922 | EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_end); | |
4923 | ||
1db64e87 EBE |
4924 | static int devlink_fmsg_put_value(struct devlink_fmsg *fmsg, |
4925 | const void *value, u16 value_len, | |
4926 | u8 value_nla_type) | |
4927 | { | |
4928 | struct devlink_fmsg_item *item; | |
4929 | ||
4930 | if (value_len > DEVLINK_FMSG_MAX_SIZE) | |
4931 | return -EMSGSIZE; | |
4932 | ||
4933 | item = kzalloc(sizeof(*item) + value_len, GFP_KERNEL); | |
4934 | if (!item) | |
4935 | return -ENOMEM; | |
4936 | ||
4937 | item->nla_type = value_nla_type; | |
4938 | item->len = value_len; | |
4939 | item->attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA; | |
4940 | memcpy(&item->value, value, item->len); | |
4941 | list_add_tail(&item->list, &fmsg->item_list); | |
4942 | ||
4943 | return 0; | |
4944 | } | |
4945 | ||
4946 | int devlink_fmsg_bool_put(struct devlink_fmsg *fmsg, bool value) | |
4947 | { | |
573ed90a AL |
4948 | if (fmsg->putting_binary) |
4949 | return -EINVAL; | |
4950 | ||
1db64e87 EBE |
4951 | return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_FLAG); |
4952 | } | |
4953 | EXPORT_SYMBOL_GPL(devlink_fmsg_bool_put); | |
4954 | ||
4955 | int devlink_fmsg_u8_put(struct devlink_fmsg *fmsg, u8 value) | |
4956 | { | |
573ed90a AL |
4957 | if (fmsg->putting_binary) |
4958 | return -EINVAL; | |
4959 | ||
1db64e87 EBE |
4960 | return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U8); |
4961 | } | |
4962 | EXPORT_SYMBOL_GPL(devlink_fmsg_u8_put); | |
4963 | ||
4964 | int devlink_fmsg_u32_put(struct devlink_fmsg *fmsg, u32 value) | |
4965 | { | |
573ed90a AL |
4966 | if (fmsg->putting_binary) |
4967 | return -EINVAL; | |
4968 | ||
1db64e87 EBE |
4969 | return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U32); |
4970 | } | |
4971 | EXPORT_SYMBOL_GPL(devlink_fmsg_u32_put); | |
4972 | ||
4973 | int devlink_fmsg_u64_put(struct devlink_fmsg *fmsg, u64 value) | |
4974 | { | |
573ed90a AL |
4975 | if (fmsg->putting_binary) |
4976 | return -EINVAL; | |
4977 | ||
1db64e87 EBE |
4978 | return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U64); |
4979 | } | |
4980 | EXPORT_SYMBOL_GPL(devlink_fmsg_u64_put); | |
4981 | ||
4982 | int devlink_fmsg_string_put(struct devlink_fmsg *fmsg, const char *value) | |
4983 | { | |
573ed90a AL |
4984 | if (fmsg->putting_binary) |
4985 | return -EINVAL; | |
4986 | ||
1db64e87 EBE |
4987 | return devlink_fmsg_put_value(fmsg, value, strlen(value) + 1, |
4988 | NLA_NUL_STRING); | |
4989 | } | |
4990 | EXPORT_SYMBOL_GPL(devlink_fmsg_string_put); | |
4991 | ||
573ed90a AL |
4992 | int devlink_fmsg_binary_put(struct devlink_fmsg *fmsg, const void *value, |
4993 | u16 value_len) | |
1db64e87 | 4994 | { |
573ed90a AL |
4995 | if (!fmsg->putting_binary) |
4996 | return -EINVAL; | |
4997 | ||
1db64e87 EBE |
4998 | return devlink_fmsg_put_value(fmsg, value, value_len, NLA_BINARY); |
4999 | } | |
573ed90a | 5000 | EXPORT_SYMBOL_GPL(devlink_fmsg_binary_put); |
1db64e87 EBE |
5001 | |
5002 | int devlink_fmsg_bool_pair_put(struct devlink_fmsg *fmsg, const char *name, | |
5003 | bool value) | |
5004 | { | |
5005 | int err; | |
5006 | ||
5007 | err = devlink_fmsg_pair_nest_start(fmsg, name); | |
5008 | if (err) | |
5009 | return err; | |
5010 | ||
5011 | err = devlink_fmsg_bool_put(fmsg, value); | |
5012 | if (err) | |
5013 | return err; | |
5014 | ||
5015 | err = devlink_fmsg_pair_nest_end(fmsg); | |
5016 | if (err) | |
5017 | return err; | |
5018 | ||
5019 | return 0; | |
5020 | } | |
5021 | EXPORT_SYMBOL_GPL(devlink_fmsg_bool_pair_put); | |
5022 | ||
5023 | int devlink_fmsg_u8_pair_put(struct devlink_fmsg *fmsg, const char *name, | |
5024 | u8 value) | |
5025 | { | |
5026 | int err; | |
5027 | ||
5028 | err = devlink_fmsg_pair_nest_start(fmsg, name); | |
5029 | if (err) | |
5030 | return err; | |
5031 | ||
5032 | err = devlink_fmsg_u8_put(fmsg, value); | |
5033 | if (err) | |
5034 | return err; | |
5035 | ||
5036 | err = devlink_fmsg_pair_nest_end(fmsg); | |
5037 | if (err) | |
5038 | return err; | |
5039 | ||
5040 | return 0; | |
5041 | } | |
5042 | EXPORT_SYMBOL_GPL(devlink_fmsg_u8_pair_put); | |
5043 | ||
5044 | int devlink_fmsg_u32_pair_put(struct devlink_fmsg *fmsg, const char *name, | |
5045 | u32 value) | |
5046 | { | |
5047 | int err; | |
5048 | ||
5049 | err = devlink_fmsg_pair_nest_start(fmsg, name); | |
5050 | if (err) | |
5051 | return err; | |
5052 | ||
5053 | err = devlink_fmsg_u32_put(fmsg, value); | |
5054 | if (err) | |
5055 | return err; | |
5056 | ||
5057 | err = devlink_fmsg_pair_nest_end(fmsg); | |
5058 | if (err) | |
5059 | return err; | |
5060 | ||
5061 | return 0; | |
5062 | } | |
5063 | EXPORT_SYMBOL_GPL(devlink_fmsg_u32_pair_put); | |
5064 | ||
5065 | int devlink_fmsg_u64_pair_put(struct devlink_fmsg *fmsg, const char *name, | |
5066 | u64 value) | |
5067 | { | |
5068 | int err; | |
5069 | ||
5070 | err = devlink_fmsg_pair_nest_start(fmsg, name); | |
5071 | if (err) | |
5072 | return err; | |
5073 | ||
5074 | err = devlink_fmsg_u64_put(fmsg, value); | |
5075 | if (err) | |
5076 | return err; | |
5077 | ||
5078 | err = devlink_fmsg_pair_nest_end(fmsg); | |
5079 | if (err) | |
5080 | return err; | |
5081 | ||
5082 | return 0; | |
5083 | } | |
5084 | EXPORT_SYMBOL_GPL(devlink_fmsg_u64_pair_put); | |
5085 | ||
5086 | int devlink_fmsg_string_pair_put(struct devlink_fmsg *fmsg, const char *name, | |
5087 | const char *value) | |
5088 | { | |
5089 | int err; | |
5090 | ||
5091 | err = devlink_fmsg_pair_nest_start(fmsg, name); | |
5092 | if (err) | |
5093 | return err; | |
5094 | ||
5095 | err = devlink_fmsg_string_put(fmsg, value); | |
5096 | if (err) | |
5097 | return err; | |
5098 | ||
5099 | err = devlink_fmsg_pair_nest_end(fmsg); | |
5100 | if (err) | |
5101 | return err; | |
5102 | ||
5103 | return 0; | |
5104 | } | |
5105 | EXPORT_SYMBOL_GPL(devlink_fmsg_string_pair_put); | |
5106 | ||
5107 | int devlink_fmsg_binary_pair_put(struct devlink_fmsg *fmsg, const char *name, | |
e2cde864 | 5108 | const void *value, u32 value_len) |
1db64e87 | 5109 | { |
e2cde864 | 5110 | u32 data_size; |
573ed90a | 5111 | int end_err; |
e2cde864 | 5112 | u32 offset; |
1db64e87 EBE |
5113 | int err; |
5114 | ||
573ed90a | 5115 | err = devlink_fmsg_binary_pair_nest_start(fmsg, name); |
1db64e87 EBE |
5116 | if (err) |
5117 | return err; | |
5118 | ||
e2cde864 AL |
5119 | for (offset = 0; offset < value_len; offset += data_size) { |
5120 | data_size = value_len - offset; | |
5121 | if (data_size > DEVLINK_FMSG_MAX_SIZE) | |
5122 | data_size = DEVLINK_FMSG_MAX_SIZE; | |
5123 | err = devlink_fmsg_binary_put(fmsg, value + offset, data_size); | |
5124 | if (err) | |
573ed90a AL |
5125 | break; |
5126 | /* Exit from loop with a break (instead of | |
5127 | * return) to make sure putting_binary is turned off in | |
5128 | * devlink_fmsg_binary_pair_nest_end | |
5129 | */ | |
e2cde864 | 5130 | } |
1db64e87 | 5131 | |
573ed90a AL |
5132 | end_err = devlink_fmsg_binary_pair_nest_end(fmsg); |
5133 | if (end_err) | |
5134 | err = end_err; | |
1db64e87 | 5135 | |
573ed90a | 5136 | return err; |
1db64e87 EBE |
5137 | } |
5138 | EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_put); | |
5139 | ||
5140 | static int | |
5141 | devlink_fmsg_item_fill_type(struct devlink_fmsg_item *msg, struct sk_buff *skb) | |
5142 | { | |
5143 | switch (msg->nla_type) { | |
5144 | case NLA_FLAG: | |
5145 | case NLA_U8: | |
5146 | case NLA_U32: | |
5147 | case NLA_U64: | |
5148 | case NLA_NUL_STRING: | |
5149 | case NLA_BINARY: | |
5150 | return nla_put_u8(skb, DEVLINK_ATTR_FMSG_OBJ_VALUE_TYPE, | |
5151 | msg->nla_type); | |
5152 | default: | |
5153 | return -EINVAL; | |
5154 | } | |
5155 | } | |
5156 | ||
5157 | static int | |
5158 | devlink_fmsg_item_fill_data(struct devlink_fmsg_item *msg, struct sk_buff *skb) | |
5159 | { | |
5160 | int attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA; | |
5161 | u8 tmp; | |
5162 | ||
5163 | switch (msg->nla_type) { | |
5164 | case NLA_FLAG: | |
5165 | /* Always provide flag data, regardless of its value */ | |
5166 | tmp = *(bool *) msg->value; | |
5167 | ||
5168 | return nla_put_u8(skb, attrtype, tmp); | |
5169 | case NLA_U8: | |
5170 | return nla_put_u8(skb, attrtype, *(u8 *) msg->value); | |
5171 | case NLA_U32: | |
5172 | return nla_put_u32(skb, attrtype, *(u32 *) msg->value); | |
5173 | case NLA_U64: | |
5174 | return nla_put_u64_64bit(skb, attrtype, *(u64 *) msg->value, | |
5175 | DEVLINK_ATTR_PAD); | |
5176 | case NLA_NUL_STRING: | |
5177 | return nla_put_string(skb, attrtype, (char *) &msg->value); | |
5178 | case NLA_BINARY: | |
5179 | return nla_put(skb, attrtype, msg->len, (void *) &msg->value); | |
5180 | default: | |
5181 | return -EINVAL; | |
5182 | } | |
5183 | } | |
5184 | ||
5185 | static int | |
5186 | devlink_fmsg_prepare_skb(struct devlink_fmsg *fmsg, struct sk_buff *skb, | |
5187 | int *start) | |
5188 | { | |
5189 | struct devlink_fmsg_item *item; | |
5190 | struct nlattr *fmsg_nlattr; | |
5191 | int i = 0; | |
5192 | int err; | |
5193 | ||
ae0be8de | 5194 | fmsg_nlattr = nla_nest_start_noflag(skb, DEVLINK_ATTR_FMSG); |
1db64e87 EBE |
5195 | if (!fmsg_nlattr) |
5196 | return -EMSGSIZE; | |
5197 | ||
5198 | list_for_each_entry(item, &fmsg->item_list, list) { | |
5199 | if (i < *start) { | |
5200 | i++; | |
5201 | continue; | |
5202 | } | |
5203 | ||
5204 | switch (item->attrtype) { | |
5205 | case DEVLINK_ATTR_FMSG_OBJ_NEST_START: | |
5206 | case DEVLINK_ATTR_FMSG_PAIR_NEST_START: | |
5207 | case DEVLINK_ATTR_FMSG_ARR_NEST_START: | |
5208 | case DEVLINK_ATTR_FMSG_NEST_END: | |
5209 | err = nla_put_flag(skb, item->attrtype); | |
5210 | break; | |
5211 | case DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA: | |
5212 | err = devlink_fmsg_item_fill_type(item, skb); | |
5213 | if (err) | |
5214 | break; | |
5215 | err = devlink_fmsg_item_fill_data(item, skb); | |
5216 | break; | |
5217 | case DEVLINK_ATTR_FMSG_OBJ_NAME: | |
5218 | err = nla_put_string(skb, item->attrtype, | |
5219 | (char *) &item->value); | |
5220 | break; | |
5221 | default: | |
5222 | err = -EINVAL; | |
5223 | break; | |
5224 | } | |
5225 | if (!err) | |
5226 | *start = ++i; | |
5227 | else | |
5228 | break; | |
5229 | } | |
5230 | ||
5231 | nla_nest_end(skb, fmsg_nlattr); | |
5232 | return err; | |
5233 | } | |
5234 | ||
5235 | static int devlink_fmsg_snd(struct devlink_fmsg *fmsg, | |
5236 | struct genl_info *info, | |
5237 | enum devlink_command cmd, int flags) | |
5238 | { | |
5239 | struct nlmsghdr *nlh; | |
5240 | struct sk_buff *skb; | |
5241 | bool last = false; | |
5242 | int index = 0; | |
5243 | void *hdr; | |
5244 | int err; | |
5245 | ||
5246 | while (!last) { | |
5247 | int tmp_index = index; | |
5248 | ||
5249 | skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
5250 | if (!skb) | |
5251 | return -ENOMEM; | |
5252 | ||
5253 | hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq, | |
5254 | &devlink_nl_family, flags | NLM_F_MULTI, cmd); | |
5255 | if (!hdr) { | |
5256 | err = -EMSGSIZE; | |
5257 | goto nla_put_failure; | |
5258 | } | |
5259 | ||
5260 | err = devlink_fmsg_prepare_skb(fmsg, skb, &index); | |
5261 | if (!err) | |
5262 | last = true; | |
5263 | else if (err != -EMSGSIZE || tmp_index == index) | |
5264 | goto nla_put_failure; | |
5265 | ||
5266 | genlmsg_end(skb, hdr); | |
5267 | err = genlmsg_reply(skb, info); | |
5268 | if (err) | |
5269 | return err; | |
5270 | } | |
5271 | ||
5272 | skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
5273 | if (!skb) | |
5274 | return -ENOMEM; | |
5275 | nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq, | |
5276 | NLMSG_DONE, 0, flags | NLM_F_MULTI); | |
5277 | if (!nlh) { | |
5278 | err = -EMSGSIZE; | |
5279 | goto nla_put_failure; | |
5280 | } | |
1db64e87 | 5281 | |
fde55ea7 | 5282 | return genlmsg_reply(skb, info); |
1db64e87 EBE |
5283 | |
5284 | nla_put_failure: | |
5285 | nlmsg_free(skb); | |
5286 | return err; | |
5287 | } | |
5288 | ||
e44ef4e4 AL |
5289 | static int devlink_fmsg_dumpit(struct devlink_fmsg *fmsg, struct sk_buff *skb, |
5290 | struct netlink_callback *cb, | |
5291 | enum devlink_command cmd) | |
5292 | { | |
5293 | int index = cb->args[0]; | |
5294 | int tmp_index = index; | |
5295 | void *hdr; | |
5296 | int err; | |
5297 | ||
5298 | hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, | |
5299 | &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI, cmd); | |
5300 | if (!hdr) { | |
5301 | err = -EMSGSIZE; | |
5302 | goto nla_put_failure; | |
5303 | } | |
5304 | ||
5305 | err = devlink_fmsg_prepare_skb(fmsg, skb, &index); | |
5306 | if ((err && err != -EMSGSIZE) || tmp_index == index) | |
5307 | goto nla_put_failure; | |
5308 | ||
5309 | cb->args[0] = index; | |
5310 | genlmsg_end(skb, hdr); | |
5311 | return skb->len; | |
5312 | ||
5313 | nla_put_failure: | |
5314 | genlmsg_cancel(skb, hdr); | |
5315 | return err; | |
5316 | } | |
5317 | ||
a0bdcc59 EBE |
5318 | struct devlink_health_reporter { |
5319 | struct list_head list; | |
5320 | void *priv; | |
5321 | const struct devlink_health_reporter_ops *ops; | |
5322 | struct devlink *devlink; | |
f4f54166 | 5323 | struct devlink_port *devlink_port; |
c8e1da0b EBE |
5324 | struct devlink_fmsg *dump_fmsg; |
5325 | struct mutex dump_lock; /* lock parallel read/write from dump buffers */ | |
a0bdcc59 EBE |
5326 | u64 graceful_period; |
5327 | bool auto_recover; | |
48bb52c8 | 5328 | bool auto_dump; |
a0bdcc59 | 5329 | u8 health_state; |
c8e1da0b | 5330 | u64 dump_ts; |
d279505b | 5331 | u64 dump_real_ts; |
c8e1da0b EBE |
5332 | u64 error_count; |
5333 | u64 recovery_count; | |
5334 | u64 last_recovery_ts; | |
b587bdaf | 5335 | refcount_t refcount; |
c8e1da0b EBE |
5336 | }; |
5337 | ||
a0bdcc59 EBE |
5338 | void * |
5339 | devlink_health_reporter_priv(struct devlink_health_reporter *reporter) | |
5340 | { | |
5341 | return reporter->priv; | |
5342 | } | |
5343 | EXPORT_SYMBOL_GPL(devlink_health_reporter_priv); | |
5344 | ||
5345 | static struct devlink_health_reporter * | |
bd821005 VT |
5346 | __devlink_health_reporter_find_by_name(struct list_head *reporter_list, |
5347 | struct mutex *list_lock, | |
5348 | const char *reporter_name) | |
a0bdcc59 EBE |
5349 | { |
5350 | struct devlink_health_reporter *reporter; | |
5351 | ||
bd821005 VT |
5352 | lockdep_assert_held(list_lock); |
5353 | list_for_each_entry(reporter, reporter_list, list) | |
a0bdcc59 EBE |
5354 | if (!strcmp(reporter->ops->name, reporter_name)) |
5355 | return reporter; | |
5356 | return NULL; | |
5357 | } | |
5358 | ||
bd821005 VT |
5359 | static struct devlink_health_reporter * |
5360 | devlink_health_reporter_find_by_name(struct devlink *devlink, | |
5361 | const char *reporter_name) | |
5362 | { | |
5363 | return __devlink_health_reporter_find_by_name(&devlink->reporter_list, | |
5364 | &devlink->reporters_lock, | |
5365 | reporter_name); | |
5366 | } | |
5367 | ||
f4f54166 VT |
5368 | static struct devlink_health_reporter * |
5369 | devlink_port_health_reporter_find_by_name(struct devlink_port *devlink_port, | |
5370 | const char *reporter_name) | |
5371 | { | |
5372 | return __devlink_health_reporter_find_by_name(&devlink_port->reporter_list, | |
5373 | &devlink_port->reporters_lock, | |
5374 | reporter_name); | |
5375 | } | |
5376 | ||
c57544b3 VT |
5377 | static struct devlink_health_reporter * |
5378 | __devlink_health_reporter_create(struct devlink *devlink, | |
5379 | const struct devlink_health_reporter_ops *ops, | |
5380 | u64 graceful_period, void *priv) | |
5381 | { | |
5382 | struct devlink_health_reporter *reporter; | |
5383 | ||
5384 | if (WARN_ON(graceful_period && !ops->recover)) | |
5385 | return ERR_PTR(-EINVAL); | |
5386 | ||
5387 | reporter = kzalloc(sizeof(*reporter), GFP_KERNEL); | |
5388 | if (!reporter) | |
5389 | return ERR_PTR(-ENOMEM); | |
5390 | ||
5391 | reporter->priv = priv; | |
5392 | reporter->ops = ops; | |
5393 | reporter->devlink = devlink; | |
5394 | reporter->graceful_period = graceful_period; | |
5395 | reporter->auto_recover = !!ops->recover; | |
5396 | reporter->auto_dump = !!ops->dump; | |
5397 | mutex_init(&reporter->dump_lock); | |
5398 | refcount_set(&reporter->refcount, 1); | |
5399 | return reporter; | |
5400 | } | |
5401 | ||
15c724b9 VT |
5402 | /** |
5403 | * devlink_port_health_reporter_create - create devlink health reporter for | |
5404 | * specified port instance | |
5405 | * | |
5406 | * @port: devlink_port which should contain the new reporter | |
5407 | * @ops: ops | |
5408 | * @graceful_period: to avoid recovery loops, in msecs | |
5409 | * @priv: priv | |
5410 | */ | |
5411 | struct devlink_health_reporter * | |
5412 | devlink_port_health_reporter_create(struct devlink_port *port, | |
5413 | const struct devlink_health_reporter_ops *ops, | |
5414 | u64 graceful_period, void *priv) | |
5415 | { | |
5416 | struct devlink_health_reporter *reporter; | |
5417 | ||
5418 | mutex_lock(&port->reporters_lock); | |
5419 | if (__devlink_health_reporter_find_by_name(&port->reporter_list, | |
5420 | &port->reporters_lock, ops->name)) { | |
5421 | reporter = ERR_PTR(-EEXIST); | |
5422 | goto unlock; | |
5423 | } | |
5424 | ||
5425 | reporter = __devlink_health_reporter_create(port->devlink, ops, | |
5426 | graceful_period, priv); | |
5427 | if (IS_ERR(reporter)) | |
5428 | goto unlock; | |
5429 | ||
5430 | reporter->devlink_port = port; | |
5431 | list_add_tail(&reporter->list, &port->reporter_list); | |
5432 | unlock: | |
5433 | mutex_unlock(&port->reporters_lock); | |
5434 | return reporter; | |
5435 | } | |
5436 | EXPORT_SYMBOL_GPL(devlink_port_health_reporter_create); | |
5437 | ||
a0bdcc59 EBE |
5438 | /** |
5439 | * devlink_health_reporter_create - create devlink health reporter | |
5440 | * | |
5441 | * @devlink: devlink | |
5442 | * @ops: ops | |
5443 | * @graceful_period: to avoid recovery loops, in msecs | |
a0bdcc59 EBE |
5444 | * @priv: priv |
5445 | */ | |
5446 | struct devlink_health_reporter * | |
5447 | devlink_health_reporter_create(struct devlink *devlink, | |
5448 | const struct devlink_health_reporter_ops *ops, | |
ba7d16c7 | 5449 | u64 graceful_period, void *priv) |
a0bdcc59 EBE |
5450 | { |
5451 | struct devlink_health_reporter *reporter; | |
5452 | ||
b587bdaf | 5453 | mutex_lock(&devlink->reporters_lock); |
a0bdcc59 EBE |
5454 | if (devlink_health_reporter_find_by_name(devlink, ops->name)) { |
5455 | reporter = ERR_PTR(-EEXIST); | |
5456 | goto unlock; | |
5457 | } | |
5458 | ||
c57544b3 VT |
5459 | reporter = __devlink_health_reporter_create(devlink, ops, |
5460 | graceful_period, priv); | |
5461 | if (IS_ERR(reporter)) | |
a0bdcc59 | 5462 | goto unlock; |
a0bdcc59 | 5463 | |
a0bdcc59 EBE |
5464 | list_add_tail(&reporter->list, &devlink->reporter_list); |
5465 | unlock: | |
b587bdaf | 5466 | mutex_unlock(&devlink->reporters_lock); |
a0bdcc59 EBE |
5467 | return reporter; |
5468 | } | |
5469 | EXPORT_SYMBOL_GPL(devlink_health_reporter_create); | |
5470 | ||
3c5584bf VT |
5471 | static void |
5472 | devlink_health_reporter_free(struct devlink_health_reporter *reporter) | |
5473 | { | |
5474 | mutex_destroy(&reporter->dump_lock); | |
5475 | if (reporter->dump_fmsg) | |
5476 | devlink_fmsg_free(reporter->dump_fmsg); | |
5477 | kfree(reporter); | |
5478 | } | |
5479 | ||
5480 | static void | |
5481 | devlink_health_reporter_put(struct devlink_health_reporter *reporter) | |
5482 | { | |
5483 | if (refcount_dec_and_test(&reporter->refcount)) | |
5484 | devlink_health_reporter_free(reporter); | |
5485 | } | |
5486 | ||
5487 | static void | |
5488 | __devlink_health_reporter_destroy(struct devlink_health_reporter *reporter) | |
5489 | { | |
5490 | list_del(&reporter->list); | |
5491 | devlink_health_reporter_put(reporter); | |
5492 | } | |
5493 | ||
a0bdcc59 EBE |
5494 | /** |
5495 | * devlink_health_reporter_destroy - destroy devlink health reporter | |
5496 | * | |
5497 | * @reporter: devlink health reporter to destroy | |
5498 | */ | |
5499 | void | |
5500 | devlink_health_reporter_destroy(struct devlink_health_reporter *reporter) | |
5501 | { | |
5d037b4d IS |
5502 | struct mutex *lock = &reporter->devlink->reporters_lock; |
5503 | ||
5504 | mutex_lock(lock); | |
3c5584bf | 5505 | __devlink_health_reporter_destroy(reporter); |
5d037b4d | 5506 | mutex_unlock(lock); |
a0bdcc59 EBE |
5507 | } |
5508 | EXPORT_SYMBOL_GPL(devlink_health_reporter_destroy); | |
5509 | ||
15c724b9 VT |
5510 | /** |
5511 | * devlink_port_health_reporter_destroy - destroy devlink port health reporter | |
5512 | * | |
5513 | * @reporter: devlink health reporter to destroy | |
5514 | */ | |
5515 | void | |
5516 | devlink_port_health_reporter_destroy(struct devlink_health_reporter *reporter) | |
5517 | { | |
5d037b4d IS |
5518 | struct mutex *lock = &reporter->devlink_port->reporters_lock; |
5519 | ||
5520 | mutex_lock(lock); | |
15c724b9 | 5521 | __devlink_health_reporter_destroy(reporter); |
5d037b4d | 5522 | mutex_unlock(lock); |
15c724b9 VT |
5523 | } |
5524 | EXPORT_SYMBOL_GPL(devlink_port_health_reporter_destroy); | |
5525 | ||
6ec8b6cd MS |
5526 | static int |
5527 | devlink_nl_health_reporter_fill(struct sk_buff *msg, | |
5528 | struct devlink *devlink, | |
5529 | struct devlink_health_reporter *reporter, | |
5530 | enum devlink_command cmd, u32 portid, | |
5531 | u32 seq, int flags) | |
5532 | { | |
5533 | struct nlattr *reporter_attr; | |
5534 | void *hdr; | |
5535 | ||
5536 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
5537 | if (!hdr) | |
5538 | return -EMSGSIZE; | |
5539 | ||
5540 | if (devlink_nl_put_handle(msg, devlink)) | |
5541 | goto genlmsg_cancel; | |
5542 | ||
f4f54166 VT |
5543 | if (reporter->devlink_port) { |
5544 | if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, reporter->devlink_port->index)) | |
5545 | goto genlmsg_cancel; | |
5546 | } | |
6ec8b6cd MS |
5547 | reporter_attr = nla_nest_start_noflag(msg, |
5548 | DEVLINK_ATTR_HEALTH_REPORTER); | |
5549 | if (!reporter_attr) | |
5550 | goto genlmsg_cancel; | |
5551 | if (nla_put_string(msg, DEVLINK_ATTR_HEALTH_REPORTER_NAME, | |
5552 | reporter->ops->name)) | |
5553 | goto reporter_nest_cancel; | |
5554 | if (nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_STATE, | |
5555 | reporter->health_state)) | |
5556 | goto reporter_nest_cancel; | |
5557 | if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_ERR_COUNT, | |
5558 | reporter->error_count, DEVLINK_ATTR_PAD)) | |
5559 | goto reporter_nest_cancel; | |
5560 | if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_RECOVER_COUNT, | |
5561 | reporter->recovery_count, DEVLINK_ATTR_PAD)) | |
5562 | goto reporter_nest_cancel; | |
5563 | if (reporter->ops->recover && | |
5564 | nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD, | |
5565 | reporter->graceful_period, | |
5566 | DEVLINK_ATTR_PAD)) | |
5567 | goto reporter_nest_cancel; | |
5568 | if (reporter->ops->recover && | |
5569 | nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER, | |
5570 | reporter->auto_recover)) | |
5571 | goto reporter_nest_cancel; | |
5572 | if (reporter->dump_fmsg && | |
5573 | nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS, | |
5574 | jiffies_to_msecs(reporter->dump_ts), | |
5575 | DEVLINK_ATTR_PAD)) | |
5576 | goto reporter_nest_cancel; | |
5577 | if (reporter->dump_fmsg && | |
5578 | nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS_NS, | |
5579 | reporter->dump_real_ts, DEVLINK_ATTR_PAD)) | |
5580 | goto reporter_nest_cancel; | |
48bb52c8 EBE |
5581 | if (reporter->ops->dump && |
5582 | nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP, | |
5583 | reporter->auto_dump)) | |
5584 | goto reporter_nest_cancel; | |
6ec8b6cd MS |
5585 | |
5586 | nla_nest_end(msg, reporter_attr); | |
5587 | genlmsg_end(msg, hdr); | |
5588 | return 0; | |
5589 | ||
5590 | reporter_nest_cancel: | |
5591 | nla_nest_end(msg, reporter_attr); | |
5592 | genlmsg_cancel: | |
5593 | genlmsg_cancel(msg, hdr); | |
5594 | return -EMSGSIZE; | |
5595 | } | |
5596 | ||
5597 | static void devlink_recover_notify(struct devlink_health_reporter *reporter, | |
5598 | enum devlink_command cmd) | |
5599 | { | |
5600 | struct sk_buff *msg; | |
5601 | int err; | |
5602 | ||
5603 | WARN_ON(cmd != DEVLINK_CMD_HEALTH_REPORTER_RECOVER); | |
5604 | ||
5605 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
5606 | if (!msg) | |
5607 | return; | |
5608 | ||
5609 | err = devlink_nl_health_reporter_fill(msg, reporter->devlink, | |
5610 | reporter, cmd, 0, 0, 0); | |
5611 | if (err) { | |
5612 | nlmsg_free(msg); | |
5613 | return; | |
5614 | } | |
5615 | ||
5616 | genlmsg_multicast_netns(&devlink_nl_family, | |
5617 | devlink_net(reporter->devlink), | |
5618 | msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL); | |
5619 | } | |
5620 | ||
6181e5cb VG |
5621 | void |
5622 | devlink_health_reporter_recovery_done(struct devlink_health_reporter *reporter) | |
5623 | { | |
5624 | reporter->recovery_count++; | |
5625 | reporter->last_recovery_ts = jiffies; | |
5626 | } | |
5627 | EXPORT_SYMBOL_GPL(devlink_health_reporter_recovery_done); | |
5628 | ||
c8e1da0b EBE |
5629 | static int |
5630 | devlink_health_reporter_recover(struct devlink_health_reporter *reporter, | |
e7a98105 | 5631 | void *priv_ctx, struct netlink_ext_ack *extack) |
c8e1da0b EBE |
5632 | { |
5633 | int err; | |
5634 | ||
40281820 JP |
5635 | if (reporter->health_state == DEVLINK_HEALTH_REPORTER_STATE_HEALTHY) |
5636 | return 0; | |
5637 | ||
c8e1da0b EBE |
5638 | if (!reporter->ops->recover) |
5639 | return -EOPNOTSUPP; | |
5640 | ||
e7a98105 | 5641 | err = reporter->ops->recover(reporter, priv_ctx, extack); |
c8e1da0b EBE |
5642 | if (err) |
5643 | return err; | |
5644 | ||
6181e5cb | 5645 | devlink_health_reporter_recovery_done(reporter); |
c8e1da0b | 5646 | reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_HEALTHY; |
6ec8b6cd | 5647 | devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER); |
c8e1da0b EBE |
5648 | |
5649 | return 0; | |
5650 | } | |
5651 | ||
5652 | static void | |
5653 | devlink_health_dump_clear(struct devlink_health_reporter *reporter) | |
5654 | { | |
5655 | if (!reporter->dump_fmsg) | |
5656 | return; | |
5657 | devlink_fmsg_free(reporter->dump_fmsg); | |
5658 | reporter->dump_fmsg = NULL; | |
5659 | } | |
5660 | ||
5661 | static int devlink_health_do_dump(struct devlink_health_reporter *reporter, | |
e7a98105 JP |
5662 | void *priv_ctx, |
5663 | struct netlink_ext_ack *extack) | |
c8e1da0b EBE |
5664 | { |
5665 | int err; | |
5666 | ||
5667 | if (!reporter->ops->dump) | |
5668 | return 0; | |
5669 | ||
5670 | if (reporter->dump_fmsg) | |
5671 | return 0; | |
5672 | ||
5673 | reporter->dump_fmsg = devlink_fmsg_alloc(); | |
5674 | if (!reporter->dump_fmsg) { | |
5675 | err = -ENOMEM; | |
5676 | return err; | |
5677 | } | |
5678 | ||
5679 | err = devlink_fmsg_obj_nest_start(reporter->dump_fmsg); | |
5680 | if (err) | |
5681 | goto dump_err; | |
5682 | ||
5683 | err = reporter->ops->dump(reporter, reporter->dump_fmsg, | |
e7a98105 | 5684 | priv_ctx, extack); |
c8e1da0b EBE |
5685 | if (err) |
5686 | goto dump_err; | |
5687 | ||
5688 | err = devlink_fmsg_obj_nest_end(reporter->dump_fmsg); | |
5689 | if (err) | |
5690 | goto dump_err; | |
5691 | ||
5692 | reporter->dump_ts = jiffies; | |
d279505b | 5693 | reporter->dump_real_ts = ktime_get_real_ns(); |
c8e1da0b EBE |
5694 | |
5695 | return 0; | |
5696 | ||
5697 | dump_err: | |
5698 | devlink_health_dump_clear(reporter); | |
5699 | return err; | |
5700 | } | |
5701 | ||
5702 | int devlink_health_report(struct devlink_health_reporter *reporter, | |
5703 | const char *msg, void *priv_ctx) | |
5704 | { | |
a0a21adb | 5705 | enum devlink_health_reporter_state prev_health_state; |
c8e1da0b | 5706 | struct devlink *devlink = reporter->devlink; |
bea0c5c9 | 5707 | unsigned long recover_ts_threshold; |
c8e1da0b EBE |
5708 | |
5709 | /* write a log message of the current error */ | |
5710 | WARN_ON(!msg); | |
5711 | trace_devlink_health_report(devlink, reporter->ops->name, msg); | |
5712 | reporter->error_count++; | |
a0a21adb EBE |
5713 | prev_health_state = reporter->health_state; |
5714 | reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR; | |
6ec8b6cd | 5715 | devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER); |
c8e1da0b EBE |
5716 | |
5717 | /* abort if the previous error wasn't recovered */ | |
bea0c5c9 AL |
5718 | recover_ts_threshold = reporter->last_recovery_ts + |
5719 | msecs_to_jiffies(reporter->graceful_period); | |
c8e1da0b | 5720 | if (reporter->auto_recover && |
a0a21adb | 5721 | (prev_health_state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY || |
bea0c5c9 AL |
5722 | (reporter->last_recovery_ts && reporter->recovery_count && |
5723 | time_is_after_jiffies(recover_ts_threshold)))) { | |
c8e1da0b EBE |
5724 | trace_devlink_health_recover_aborted(devlink, |
5725 | reporter->ops->name, | |
5726 | reporter->health_state, | |
5727 | jiffies - | |
5728 | reporter->last_recovery_ts); | |
5729 | return -ECANCELED; | |
5730 | } | |
5731 | ||
5732 | reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR; | |
5733 | ||
48bb52c8 EBE |
5734 | if (reporter->auto_dump) { |
5735 | mutex_lock(&reporter->dump_lock); | |
5736 | /* store current dump of current error, for later analysis */ | |
5737 | devlink_health_do_dump(reporter, priv_ctx, NULL); | |
5738 | mutex_unlock(&reporter->dump_lock); | |
5739 | } | |
c8e1da0b EBE |
5740 | |
5741 | if (reporter->auto_recover) | |
e7a98105 JP |
5742 | return devlink_health_reporter_recover(reporter, |
5743 | priv_ctx, NULL); | |
c8e1da0b EBE |
5744 | |
5745 | return 0; | |
5746 | } | |
5747 | EXPORT_SYMBOL_GPL(devlink_health_report); | |
5748 | ||
7afe335a | 5749 | static struct devlink_health_reporter * |
e44ef4e4 AL |
5750 | devlink_health_reporter_get_from_attrs(struct devlink *devlink, |
5751 | struct nlattr **attrs) | |
7afe335a | 5752 | { |
b587bdaf | 5753 | struct devlink_health_reporter *reporter; |
f4f54166 | 5754 | struct devlink_port *devlink_port; |
7afe335a EBE |
5755 | char *reporter_name; |
5756 | ||
e44ef4e4 | 5757 | if (!attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME]) |
7afe335a EBE |
5758 | return NULL; |
5759 | ||
e44ef4e4 | 5760 | reporter_name = nla_data(attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME]); |
f4f54166 VT |
5761 | devlink_port = devlink_port_get_from_attrs(devlink, attrs); |
5762 | if (IS_ERR(devlink_port)) { | |
5763 | mutex_lock(&devlink->reporters_lock); | |
5764 | reporter = devlink_health_reporter_find_by_name(devlink, reporter_name); | |
5765 | if (reporter) | |
5766 | refcount_inc(&reporter->refcount); | |
5767 | mutex_unlock(&devlink->reporters_lock); | |
5768 | } else { | |
5769 | mutex_lock(&devlink_port->reporters_lock); | |
5770 | reporter = devlink_port_health_reporter_find_by_name(devlink_port, reporter_name); | |
5771 | if (reporter) | |
5772 | refcount_inc(&reporter->refcount); | |
5773 | mutex_unlock(&devlink_port->reporters_lock); | |
5774 | } | |
5775 | ||
b587bdaf MS |
5776 | return reporter; |
5777 | } | |
5778 | ||
e44ef4e4 AL |
5779 | static struct devlink_health_reporter * |
5780 | devlink_health_reporter_get_from_info(struct devlink *devlink, | |
5781 | struct genl_info *info) | |
5782 | { | |
5783 | return devlink_health_reporter_get_from_attrs(devlink, info->attrs); | |
5784 | } | |
5785 | ||
5786 | static struct devlink_health_reporter * | |
5787 | devlink_health_reporter_get_from_cb(struct netlink_callback *cb) | |
5788 | { | |
ee85da53 | 5789 | const struct genl_dumpit_info *info = genl_dumpit_info(cb); |
e44ef4e4 | 5790 | struct devlink_health_reporter *reporter; |
ee85da53 | 5791 | struct nlattr **attrs = info->attrs; |
e44ef4e4 | 5792 | struct devlink *devlink; |
e44ef4e4 AL |
5793 | |
5794 | mutex_lock(&devlink_mutex); | |
5795 | devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs); | |
5796 | if (IS_ERR(devlink)) | |
5797 | goto unlock; | |
5798 | ||
5799 | reporter = devlink_health_reporter_get_from_attrs(devlink, attrs); | |
5800 | mutex_unlock(&devlink_mutex); | |
e44ef4e4 AL |
5801 | return reporter; |
5802 | unlock: | |
5803 | mutex_unlock(&devlink_mutex); | |
e44ef4e4 AL |
5804 | return NULL; |
5805 | } | |
5806 | ||
97ff3bd3 VG |
5807 | void |
5808 | devlink_health_reporter_state_update(struct devlink_health_reporter *reporter, | |
5809 | enum devlink_health_reporter_state state) | |
5810 | { | |
5811 | if (WARN_ON(state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY && | |
5812 | state != DEVLINK_HEALTH_REPORTER_STATE_ERROR)) | |
5813 | return; | |
5814 | ||
5815 | if (reporter->health_state == state) | |
5816 | return; | |
5817 | ||
5818 | reporter->health_state = state; | |
5819 | trace_devlink_health_reporter_state_update(reporter->devlink, | |
5820 | reporter->ops->name, state); | |
5821 | devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER); | |
5822 | } | |
5823 | EXPORT_SYMBOL_GPL(devlink_health_reporter_state_update); | |
5824 | ||
7afe335a EBE |
5825 | static int devlink_nl_cmd_health_reporter_get_doit(struct sk_buff *skb, |
5826 | struct genl_info *info) | |
5827 | { | |
5828 | struct devlink *devlink = info->user_ptr[0]; | |
5829 | struct devlink_health_reporter *reporter; | |
5830 | struct sk_buff *msg; | |
5831 | int err; | |
5832 | ||
5833 | reporter = devlink_health_reporter_get_from_info(devlink, info); | |
5834 | if (!reporter) | |
5835 | return -EINVAL; | |
5836 | ||
5837 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
b587bdaf MS |
5838 | if (!msg) { |
5839 | err = -ENOMEM; | |
5840 | goto out; | |
5841 | } | |
7afe335a EBE |
5842 | |
5843 | err = devlink_nl_health_reporter_fill(msg, devlink, reporter, | |
5844 | DEVLINK_CMD_HEALTH_REPORTER_GET, | |
5845 | info->snd_portid, info->snd_seq, | |
5846 | 0); | |
5847 | if (err) { | |
5848 | nlmsg_free(msg); | |
b587bdaf | 5849 | goto out; |
7afe335a EBE |
5850 | } |
5851 | ||
b587bdaf MS |
5852 | err = genlmsg_reply(msg, info); |
5853 | out: | |
5854 | devlink_health_reporter_put(reporter); | |
5855 | return err; | |
7afe335a EBE |
5856 | } |
5857 | ||
5858 | static int | |
5859 | devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg, | |
5860 | struct netlink_callback *cb) | |
5861 | { | |
5862 | struct devlink_health_reporter *reporter; | |
f4f54166 | 5863 | struct devlink_port *port; |
7afe335a EBE |
5864 | struct devlink *devlink; |
5865 | int start = cb->args[0]; | |
5866 | int idx = 0; | |
5867 | int err; | |
5868 | ||
5869 | mutex_lock(&devlink_mutex); | |
5870 | list_for_each_entry(devlink, &devlink_list, list) { | |
5871 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) | |
5872 | continue; | |
b587bdaf | 5873 | mutex_lock(&devlink->reporters_lock); |
7afe335a EBE |
5874 | list_for_each_entry(reporter, &devlink->reporter_list, |
5875 | list) { | |
5876 | if (idx < start) { | |
5877 | idx++; | |
5878 | continue; | |
5879 | } | |
5880 | err = devlink_nl_health_reporter_fill(msg, devlink, | |
5881 | reporter, | |
5882 | DEVLINK_CMD_HEALTH_REPORTER_GET, | |
5883 | NETLINK_CB(cb->skb).portid, | |
5884 | cb->nlh->nlmsg_seq, | |
5885 | NLM_F_MULTI); | |
5886 | if (err) { | |
b587bdaf | 5887 | mutex_unlock(&devlink->reporters_lock); |
7afe335a EBE |
5888 | goto out; |
5889 | } | |
5890 | idx++; | |
5891 | } | |
b587bdaf | 5892 | mutex_unlock(&devlink->reporters_lock); |
7afe335a | 5893 | } |
f4f54166 VT |
5894 | |
5895 | list_for_each_entry(devlink, &devlink_list, list) { | |
5896 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) | |
5897 | continue; | |
5898 | list_for_each_entry(port, &devlink->port_list, list) { | |
5899 | mutex_lock(&port->reporters_lock); | |
5900 | list_for_each_entry(reporter, &port->reporter_list, list) { | |
5901 | if (idx < start) { | |
5902 | idx++; | |
5903 | continue; | |
5904 | } | |
5905 | err = devlink_nl_health_reporter_fill(msg, devlink, reporter, | |
5906 | DEVLINK_CMD_HEALTH_REPORTER_GET, | |
5907 | NETLINK_CB(cb->skb).portid, | |
5908 | cb->nlh->nlmsg_seq, | |
5909 | NLM_F_MULTI); | |
5910 | if (err) { | |
5911 | mutex_unlock(&port->reporters_lock); | |
5912 | goto out; | |
5913 | } | |
5914 | idx++; | |
5915 | } | |
5916 | mutex_unlock(&port->reporters_lock); | |
5917 | } | |
5918 | } | |
7afe335a EBE |
5919 | out: |
5920 | mutex_unlock(&devlink_mutex); | |
5921 | ||
5922 | cb->args[0] = idx; | |
5923 | return msg->len; | |
5924 | } | |
5925 | ||
a1e55ec0 EBE |
5926 | static int |
5927 | devlink_nl_cmd_health_reporter_set_doit(struct sk_buff *skb, | |
5928 | struct genl_info *info) | |
5929 | { | |
5930 | struct devlink *devlink = info->user_ptr[0]; | |
5931 | struct devlink_health_reporter *reporter; | |
b587bdaf | 5932 | int err; |
a1e55ec0 EBE |
5933 | |
5934 | reporter = devlink_health_reporter_get_from_info(devlink, info); | |
5935 | if (!reporter) | |
5936 | return -EINVAL; | |
5937 | ||
5938 | if (!reporter->ops->recover && | |
5939 | (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] || | |
b587bdaf MS |
5940 | info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])) { |
5941 | err = -EOPNOTSUPP; | |
5942 | goto out; | |
5943 | } | |
48bb52c8 EBE |
5944 | if (!reporter->ops->dump && |
5945 | info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]) { | |
5946 | err = -EOPNOTSUPP; | |
5947 | goto out; | |
5948 | } | |
a1e55ec0 EBE |
5949 | |
5950 | if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD]) | |
5951 | reporter->graceful_period = | |
5952 | nla_get_u64(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD]); | |
5953 | ||
5954 | if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER]) | |
5955 | reporter->auto_recover = | |
5956 | nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER]); | |
5957 | ||
48bb52c8 EBE |
5958 | if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]) |
5959 | reporter->auto_dump = | |
5960 | nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]); | |
5961 | ||
b587bdaf | 5962 | devlink_health_reporter_put(reporter); |
a1e55ec0 | 5963 | return 0; |
b587bdaf MS |
5964 | out: |
5965 | devlink_health_reporter_put(reporter); | |
5966 | return err; | |
a1e55ec0 EBE |
5967 | } |
5968 | ||
20a0943a EBE |
5969 | static int devlink_nl_cmd_health_reporter_recover_doit(struct sk_buff *skb, |
5970 | struct genl_info *info) | |
5971 | { | |
5972 | struct devlink *devlink = info->user_ptr[0]; | |
5973 | struct devlink_health_reporter *reporter; | |
b587bdaf | 5974 | int err; |
20a0943a EBE |
5975 | |
5976 | reporter = devlink_health_reporter_get_from_info(devlink, info); | |
5977 | if (!reporter) | |
5978 | return -EINVAL; | |
5979 | ||
e7a98105 | 5980 | err = devlink_health_reporter_recover(reporter, NULL, info->extack); |
b587bdaf MS |
5981 | |
5982 | devlink_health_reporter_put(reporter); | |
5983 | return err; | |
20a0943a EBE |
5984 | } |
5985 | ||
fca42a27 EBE |
5986 | static int devlink_nl_cmd_health_reporter_diagnose_doit(struct sk_buff *skb, |
5987 | struct genl_info *info) | |
5988 | { | |
5989 | struct devlink *devlink = info->user_ptr[0]; | |
5990 | struct devlink_health_reporter *reporter; | |
5991 | struct devlink_fmsg *fmsg; | |
5992 | int err; | |
5993 | ||
5994 | reporter = devlink_health_reporter_get_from_info(devlink, info); | |
5995 | if (!reporter) | |
5996 | return -EINVAL; | |
5997 | ||
b587bdaf MS |
5998 | if (!reporter->ops->diagnose) { |
5999 | devlink_health_reporter_put(reporter); | |
fca42a27 | 6000 | return -EOPNOTSUPP; |
b587bdaf | 6001 | } |
fca42a27 EBE |
6002 | |
6003 | fmsg = devlink_fmsg_alloc(); | |
b587bdaf MS |
6004 | if (!fmsg) { |
6005 | devlink_health_reporter_put(reporter); | |
fca42a27 | 6006 | return -ENOMEM; |
b587bdaf | 6007 | } |
fca42a27 EBE |
6008 | |
6009 | err = devlink_fmsg_obj_nest_start(fmsg); | |
6010 | if (err) | |
6011 | goto out; | |
6012 | ||
e7a98105 | 6013 | err = reporter->ops->diagnose(reporter, fmsg, info->extack); |
fca42a27 EBE |
6014 | if (err) |
6015 | goto out; | |
6016 | ||
6017 | err = devlink_fmsg_obj_nest_end(fmsg); | |
6018 | if (err) | |
6019 | goto out; | |
6020 | ||
6021 | err = devlink_fmsg_snd(fmsg, info, | |
6022 | DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE, 0); | |
6023 | ||
6024 | out: | |
6025 | devlink_fmsg_free(fmsg); | |
b587bdaf | 6026 | devlink_health_reporter_put(reporter); |
fca42a27 EBE |
6027 | return err; |
6028 | } | |
6029 | ||
e44ef4e4 AL |
6030 | static int |
6031 | devlink_nl_cmd_health_reporter_dump_get_dumpit(struct sk_buff *skb, | |
6032 | struct netlink_callback *cb) | |
35455e23 | 6033 | { |
35455e23 | 6034 | struct devlink_health_reporter *reporter; |
e44ef4e4 | 6035 | u64 start = cb->args[0]; |
35455e23 EBE |
6036 | int err; |
6037 | ||
e44ef4e4 | 6038 | reporter = devlink_health_reporter_get_from_cb(cb); |
35455e23 EBE |
6039 | if (!reporter) |
6040 | return -EINVAL; | |
6041 | ||
b587bdaf | 6042 | if (!reporter->ops->dump) { |
e44ef4e4 AL |
6043 | err = -EOPNOTSUPP; |
6044 | goto out; | |
b587bdaf | 6045 | } |
35455e23 | 6046 | mutex_lock(&reporter->dump_lock); |
e44ef4e4 | 6047 | if (!start) { |
e7a98105 | 6048 | err = devlink_health_do_dump(reporter, NULL, cb->extack); |
e44ef4e4 AL |
6049 | if (err) |
6050 | goto unlock; | |
6051 | cb->args[1] = reporter->dump_ts; | |
6052 | } | |
6053 | if (!reporter->dump_fmsg || cb->args[1] != reporter->dump_ts) { | |
6054 | NL_SET_ERR_MSG_MOD(cb->extack, "Dump trampled, please retry"); | |
6055 | err = -EAGAIN; | |
6056 | goto unlock; | |
6057 | } | |
35455e23 | 6058 | |
e44ef4e4 AL |
6059 | err = devlink_fmsg_dumpit(reporter->dump_fmsg, skb, cb, |
6060 | DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET); | |
6061 | unlock: | |
35455e23 | 6062 | mutex_unlock(&reporter->dump_lock); |
e44ef4e4 | 6063 | out: |
b587bdaf | 6064 | devlink_health_reporter_put(reporter); |
35455e23 EBE |
6065 | return err; |
6066 | } | |
6067 | ||
6068 | static int | |
6069 | devlink_nl_cmd_health_reporter_dump_clear_doit(struct sk_buff *skb, | |
6070 | struct genl_info *info) | |
6071 | { | |
6072 | struct devlink *devlink = info->user_ptr[0]; | |
6073 | struct devlink_health_reporter *reporter; | |
6074 | ||
6075 | reporter = devlink_health_reporter_get_from_info(devlink, info); | |
6076 | if (!reporter) | |
6077 | return -EINVAL; | |
6078 | ||
b587bdaf MS |
6079 | if (!reporter->ops->dump) { |
6080 | devlink_health_reporter_put(reporter); | |
35455e23 | 6081 | return -EOPNOTSUPP; |
b587bdaf | 6082 | } |
35455e23 EBE |
6083 | |
6084 | mutex_lock(&reporter->dump_lock); | |
6085 | devlink_health_dump_clear(reporter); | |
6086 | mutex_unlock(&reporter->dump_lock); | |
b587bdaf | 6087 | devlink_health_reporter_put(reporter); |
35455e23 EBE |
6088 | return 0; |
6089 | } | |
6090 | ||
0f420b6c IS |
6091 | struct devlink_stats { |
6092 | u64 rx_bytes; | |
6093 | u64 rx_packets; | |
6094 | struct u64_stats_sync syncp; | |
6095 | }; | |
6096 | ||
1e8c6619 IS |
6097 | /** |
6098 | * struct devlink_trap_policer_item - Packet trap policer attributes. | |
6099 | * @policer: Immutable packet trap policer attributes. | |
6100 | * @rate: Rate in packets / sec. | |
6101 | * @burst: Burst size in packets. | |
6102 | * @list: trap_policer_list member. | |
6103 | * | |
6104 | * Describes packet trap policer attributes. Created by devlink during trap | |
6105 | * policer registration. | |
6106 | */ | |
6107 | struct devlink_trap_policer_item { | |
6108 | const struct devlink_trap_policer *policer; | |
6109 | u64 rate; | |
6110 | u64 burst; | |
6111 | struct list_head list; | |
6112 | }; | |
6113 | ||
0f420b6c IS |
6114 | /** |
6115 | * struct devlink_trap_group_item - Packet trap group attributes. | |
6116 | * @group: Immutable packet trap group attributes. | |
f9f54392 | 6117 | * @policer_item: Associated policer item. Can be NULL. |
0f420b6c IS |
6118 | * @list: trap_group_list member. |
6119 | * @stats: Trap group statistics. | |
6120 | * | |
6121 | * Describes packet trap group attributes. Created by devlink during trap | |
a09b37fc | 6122 | * group registration. |
0f420b6c IS |
6123 | */ |
6124 | struct devlink_trap_group_item { | |
6125 | const struct devlink_trap_group *group; | |
f9f54392 | 6126 | struct devlink_trap_policer_item *policer_item; |
0f420b6c IS |
6127 | struct list_head list; |
6128 | struct devlink_stats __percpu *stats; | |
6129 | }; | |
6130 | ||
6131 | /** | |
6132 | * struct devlink_trap_item - Packet trap attributes. | |
6133 | * @trap: Immutable packet trap attributes. | |
6134 | * @group_item: Associated group item. | |
6135 | * @list: trap_list member. | |
6136 | * @action: Trap action. | |
6137 | * @stats: Trap statistics. | |
6138 | * @priv: Driver private information. | |
6139 | * | |
6140 | * Describes both mutable and immutable packet trap attributes. Created by | |
6141 | * devlink during trap registration and used for all trap related operations. | |
6142 | */ | |
6143 | struct devlink_trap_item { | |
6144 | const struct devlink_trap *trap; | |
6145 | struct devlink_trap_group_item *group_item; | |
6146 | struct list_head list; | |
6147 | enum devlink_trap_action action; | |
6148 | struct devlink_stats __percpu *stats; | |
6149 | void *priv; | |
6150 | }; | |
6151 | ||
1e8c6619 IS |
6152 | static struct devlink_trap_policer_item * |
6153 | devlink_trap_policer_item_lookup(struct devlink *devlink, u32 id) | |
6154 | { | |
6155 | struct devlink_trap_policer_item *policer_item; | |
6156 | ||
6157 | list_for_each_entry(policer_item, &devlink->trap_policer_list, list) { | |
6158 | if (policer_item->policer->id == id) | |
6159 | return policer_item; | |
6160 | } | |
6161 | ||
6162 | return NULL; | |
6163 | } | |
6164 | ||
0f420b6c IS |
6165 | static struct devlink_trap_item * |
6166 | devlink_trap_item_lookup(struct devlink *devlink, const char *name) | |
6167 | { | |
6168 | struct devlink_trap_item *trap_item; | |
6169 | ||
6170 | list_for_each_entry(trap_item, &devlink->trap_list, list) { | |
6171 | if (!strcmp(trap_item->trap->name, name)) | |
6172 | return trap_item; | |
6173 | } | |
6174 | ||
6175 | return NULL; | |
6176 | } | |
6177 | ||
6178 | static struct devlink_trap_item * | |
6179 | devlink_trap_item_get_from_info(struct devlink *devlink, | |
6180 | struct genl_info *info) | |
6181 | { | |
6182 | struct nlattr *attr; | |
6183 | ||
6184 | if (!info->attrs[DEVLINK_ATTR_TRAP_NAME]) | |
6185 | return NULL; | |
6186 | attr = info->attrs[DEVLINK_ATTR_TRAP_NAME]; | |
6187 | ||
6188 | return devlink_trap_item_lookup(devlink, nla_data(attr)); | |
6189 | } | |
6190 | ||
6191 | static int | |
6192 | devlink_trap_action_get_from_info(struct genl_info *info, | |
6193 | enum devlink_trap_action *p_trap_action) | |
6194 | { | |
6195 | u8 val; | |
6196 | ||
6197 | val = nla_get_u8(info->attrs[DEVLINK_ATTR_TRAP_ACTION]); | |
6198 | switch (val) { | |
6199 | case DEVLINK_TRAP_ACTION_DROP: /* fall-through */ | |
9eefeabe IS |
6200 | case DEVLINK_TRAP_ACTION_TRAP: /* fall-through */ |
6201 | case DEVLINK_TRAP_ACTION_MIRROR: | |
0f420b6c IS |
6202 | *p_trap_action = val; |
6203 | break; | |
6204 | default: | |
6205 | return -EINVAL; | |
6206 | } | |
6207 | ||
6208 | return 0; | |
6209 | } | |
6210 | ||
6211 | static int devlink_trap_metadata_put(struct sk_buff *msg, | |
6212 | const struct devlink_trap *trap) | |
6213 | { | |
6214 | struct nlattr *attr; | |
6215 | ||
6216 | attr = nla_nest_start(msg, DEVLINK_ATTR_TRAP_METADATA); | |
6217 | if (!attr) | |
6218 | return -EMSGSIZE; | |
6219 | ||
6220 | if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_IN_PORT) && | |
6221 | nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_IN_PORT)) | |
6222 | goto nla_put_failure; | |
85b0589e JP |
6223 | if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_FA_COOKIE) && |
6224 | nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_FA_COOKIE)) | |
6225 | goto nla_put_failure; | |
0f420b6c IS |
6226 | |
6227 | nla_nest_end(msg, attr); | |
6228 | ||
6229 | return 0; | |
6230 | ||
6231 | nla_put_failure: | |
6232 | nla_nest_cancel(msg, attr); | |
6233 | return -EMSGSIZE; | |
6234 | } | |
6235 | ||
6236 | static void devlink_trap_stats_read(struct devlink_stats __percpu *trap_stats, | |
6237 | struct devlink_stats *stats) | |
6238 | { | |
6239 | int i; | |
6240 | ||
6241 | memset(stats, 0, sizeof(*stats)); | |
6242 | for_each_possible_cpu(i) { | |
6243 | struct devlink_stats *cpu_stats; | |
6244 | u64 rx_packets, rx_bytes; | |
6245 | unsigned int start; | |
6246 | ||
6247 | cpu_stats = per_cpu_ptr(trap_stats, i); | |
6248 | do { | |
6249 | start = u64_stats_fetch_begin_irq(&cpu_stats->syncp); | |
6250 | rx_packets = cpu_stats->rx_packets; | |
6251 | rx_bytes = cpu_stats->rx_bytes; | |
6252 | } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start)); | |
6253 | ||
6254 | stats->rx_packets += rx_packets; | |
6255 | stats->rx_bytes += rx_bytes; | |
6256 | } | |
6257 | } | |
6258 | ||
6259 | static int devlink_trap_stats_put(struct sk_buff *msg, | |
6260 | struct devlink_stats __percpu *trap_stats) | |
6261 | { | |
6262 | struct devlink_stats stats; | |
6263 | struct nlattr *attr; | |
6264 | ||
6265 | devlink_trap_stats_read(trap_stats, &stats); | |
6266 | ||
6267 | attr = nla_nest_start(msg, DEVLINK_ATTR_STATS); | |
6268 | if (!attr) | |
6269 | return -EMSGSIZE; | |
6270 | ||
6271 | if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_PACKETS, | |
6272 | stats.rx_packets, DEVLINK_ATTR_PAD)) | |
6273 | goto nla_put_failure; | |
6274 | ||
6275 | if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_BYTES, | |
6276 | stats.rx_bytes, DEVLINK_ATTR_PAD)) | |
6277 | goto nla_put_failure; | |
6278 | ||
6279 | nla_nest_end(msg, attr); | |
6280 | ||
6281 | return 0; | |
6282 | ||
6283 | nla_put_failure: | |
6284 | nla_nest_cancel(msg, attr); | |
6285 | return -EMSGSIZE; | |
6286 | } | |
6287 | ||
6288 | static int devlink_nl_trap_fill(struct sk_buff *msg, struct devlink *devlink, | |
6289 | const struct devlink_trap_item *trap_item, | |
6290 | enum devlink_command cmd, u32 portid, u32 seq, | |
6291 | int flags) | |
6292 | { | |
6293 | struct devlink_trap_group_item *group_item = trap_item->group_item; | |
6294 | void *hdr; | |
6295 | int err; | |
6296 | ||
6297 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
6298 | if (!hdr) | |
6299 | return -EMSGSIZE; | |
6300 | ||
6301 | if (devlink_nl_put_handle(msg, devlink)) | |
6302 | goto nla_put_failure; | |
6303 | ||
6304 | if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME, | |
6305 | group_item->group->name)) | |
6306 | goto nla_put_failure; | |
6307 | ||
6308 | if (nla_put_string(msg, DEVLINK_ATTR_TRAP_NAME, trap_item->trap->name)) | |
6309 | goto nla_put_failure; | |
6310 | ||
6311 | if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_TYPE, trap_item->trap->type)) | |
6312 | goto nla_put_failure; | |
6313 | ||
6314 | if (trap_item->trap->generic && | |
6315 | nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC)) | |
6316 | goto nla_put_failure; | |
6317 | ||
6318 | if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_ACTION, trap_item->action)) | |
6319 | goto nla_put_failure; | |
6320 | ||
6321 | err = devlink_trap_metadata_put(msg, trap_item->trap); | |
6322 | if (err) | |
6323 | goto nla_put_failure; | |
6324 | ||
6325 | err = devlink_trap_stats_put(msg, trap_item->stats); | |
6326 | if (err) | |
6327 | goto nla_put_failure; | |
6328 | ||
6329 | genlmsg_end(msg, hdr); | |
6330 | ||
6331 | return 0; | |
6332 | ||
6333 | nla_put_failure: | |
6334 | genlmsg_cancel(msg, hdr); | |
6335 | return -EMSGSIZE; | |
6336 | } | |
6337 | ||
6338 | static int devlink_nl_cmd_trap_get_doit(struct sk_buff *skb, | |
6339 | struct genl_info *info) | |
6340 | { | |
6341 | struct netlink_ext_ack *extack = info->extack; | |
6342 | struct devlink *devlink = info->user_ptr[0]; | |
6343 | struct devlink_trap_item *trap_item; | |
6344 | struct sk_buff *msg; | |
6345 | int err; | |
6346 | ||
6347 | if (list_empty(&devlink->trap_list)) | |
6348 | return -EOPNOTSUPP; | |
6349 | ||
6350 | trap_item = devlink_trap_item_get_from_info(devlink, info); | |
6351 | if (!trap_item) { | |
6352 | NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap"); | |
6353 | return -ENOENT; | |
6354 | } | |
6355 | ||
6356 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
6357 | if (!msg) | |
6358 | return -ENOMEM; | |
6359 | ||
6360 | err = devlink_nl_trap_fill(msg, devlink, trap_item, | |
6361 | DEVLINK_CMD_TRAP_NEW, info->snd_portid, | |
6362 | info->snd_seq, 0); | |
6363 | if (err) | |
6364 | goto err_trap_fill; | |
6365 | ||
6366 | return genlmsg_reply(msg, info); | |
6367 | ||
6368 | err_trap_fill: | |
6369 | nlmsg_free(msg); | |
6370 | return err; | |
6371 | } | |
6372 | ||
6373 | static int devlink_nl_cmd_trap_get_dumpit(struct sk_buff *msg, | |
6374 | struct netlink_callback *cb) | |
6375 | { | |
6376 | struct devlink_trap_item *trap_item; | |
6377 | struct devlink *devlink; | |
6378 | int start = cb->args[0]; | |
6379 | int idx = 0; | |
6380 | int err; | |
6381 | ||
6382 | mutex_lock(&devlink_mutex); | |
6383 | list_for_each_entry(devlink, &devlink_list, list) { | |
6384 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) | |
6385 | continue; | |
6386 | mutex_lock(&devlink->lock); | |
6387 | list_for_each_entry(trap_item, &devlink->trap_list, list) { | |
6388 | if (idx < start) { | |
6389 | idx++; | |
6390 | continue; | |
6391 | } | |
6392 | err = devlink_nl_trap_fill(msg, devlink, trap_item, | |
6393 | DEVLINK_CMD_TRAP_NEW, | |
6394 | NETLINK_CB(cb->skb).portid, | |
6395 | cb->nlh->nlmsg_seq, | |
6396 | NLM_F_MULTI); | |
6397 | if (err) { | |
6398 | mutex_unlock(&devlink->lock); | |
6399 | goto out; | |
6400 | } | |
6401 | idx++; | |
6402 | } | |
6403 | mutex_unlock(&devlink->lock); | |
6404 | } | |
6405 | out: | |
6406 | mutex_unlock(&devlink_mutex); | |
6407 | ||
6408 | cb->args[0] = idx; | |
6409 | return msg->len; | |
6410 | } | |
6411 | ||
6412 | static int __devlink_trap_action_set(struct devlink *devlink, | |
6413 | struct devlink_trap_item *trap_item, | |
6414 | enum devlink_trap_action trap_action, | |
6415 | struct netlink_ext_ack *extack) | |
6416 | { | |
6417 | int err; | |
6418 | ||
6419 | if (trap_item->action != trap_action && | |
6420 | trap_item->trap->type != DEVLINK_TRAP_TYPE_DROP) { | |
6421 | NL_SET_ERR_MSG_MOD(extack, "Cannot change action of non-drop traps. Skipping"); | |
6422 | return 0; | |
6423 | } | |
6424 | ||
6425 | err = devlink->ops->trap_action_set(devlink, trap_item->trap, | |
c88e11e0 | 6426 | trap_action, extack); |
0f420b6c IS |
6427 | if (err) |
6428 | return err; | |
6429 | ||
6430 | trap_item->action = trap_action; | |
6431 | ||
6432 | return 0; | |
6433 | } | |
6434 | ||
6435 | static int devlink_trap_action_set(struct devlink *devlink, | |
6436 | struct devlink_trap_item *trap_item, | |
6437 | struct genl_info *info) | |
6438 | { | |
6439 | enum devlink_trap_action trap_action; | |
6440 | int err; | |
6441 | ||
6442 | if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION]) | |
6443 | return 0; | |
6444 | ||
6445 | err = devlink_trap_action_get_from_info(info, &trap_action); | |
6446 | if (err) { | |
6447 | NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action"); | |
6448 | return -EINVAL; | |
6449 | } | |
6450 | ||
6451 | return __devlink_trap_action_set(devlink, trap_item, trap_action, | |
6452 | info->extack); | |
6453 | } | |
6454 | ||
6455 | static int devlink_nl_cmd_trap_set_doit(struct sk_buff *skb, | |
6456 | struct genl_info *info) | |
6457 | { | |
6458 | struct netlink_ext_ack *extack = info->extack; | |
6459 | struct devlink *devlink = info->user_ptr[0]; | |
6460 | struct devlink_trap_item *trap_item; | |
6461 | int err; | |
6462 | ||
6463 | if (list_empty(&devlink->trap_list)) | |
6464 | return -EOPNOTSUPP; | |
6465 | ||
6466 | trap_item = devlink_trap_item_get_from_info(devlink, info); | |
6467 | if (!trap_item) { | |
6468 | NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap"); | |
6469 | return -ENOENT; | |
6470 | } | |
6471 | ||
6472 | err = devlink_trap_action_set(devlink, trap_item, info); | |
6473 | if (err) | |
6474 | return err; | |
6475 | ||
6476 | return 0; | |
6477 | } | |
6478 | ||
6479 | static struct devlink_trap_group_item * | |
6480 | devlink_trap_group_item_lookup(struct devlink *devlink, const char *name) | |
6481 | { | |
6482 | struct devlink_trap_group_item *group_item; | |
6483 | ||
6484 | list_for_each_entry(group_item, &devlink->trap_group_list, list) { | |
6485 | if (!strcmp(group_item->group->name, name)) | |
6486 | return group_item; | |
6487 | } | |
6488 | ||
6489 | return NULL; | |
6490 | } | |
6491 | ||
107f1678 IS |
6492 | static struct devlink_trap_group_item * |
6493 | devlink_trap_group_item_lookup_by_id(struct devlink *devlink, u16 id) | |
6494 | { | |
6495 | struct devlink_trap_group_item *group_item; | |
6496 | ||
6497 | list_for_each_entry(group_item, &devlink->trap_group_list, list) { | |
6498 | if (group_item->group->id == id) | |
6499 | return group_item; | |
6500 | } | |
6501 | ||
6502 | return NULL; | |
6503 | } | |
6504 | ||
0f420b6c IS |
6505 | static struct devlink_trap_group_item * |
6506 | devlink_trap_group_item_get_from_info(struct devlink *devlink, | |
6507 | struct genl_info *info) | |
6508 | { | |
6509 | char *name; | |
6510 | ||
6511 | if (!info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME]) | |
6512 | return NULL; | |
6513 | name = nla_data(info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME]); | |
6514 | ||
6515 | return devlink_trap_group_item_lookup(devlink, name); | |
6516 | } | |
6517 | ||
6518 | static int | |
6519 | devlink_nl_trap_group_fill(struct sk_buff *msg, struct devlink *devlink, | |
6520 | const struct devlink_trap_group_item *group_item, | |
6521 | enum devlink_command cmd, u32 portid, u32 seq, | |
6522 | int flags) | |
6523 | { | |
6524 | void *hdr; | |
6525 | int err; | |
6526 | ||
6527 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
6528 | if (!hdr) | |
6529 | return -EMSGSIZE; | |
6530 | ||
6531 | if (devlink_nl_put_handle(msg, devlink)) | |
6532 | goto nla_put_failure; | |
6533 | ||
6534 | if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME, | |
6535 | group_item->group->name)) | |
6536 | goto nla_put_failure; | |
6537 | ||
6538 | if (group_item->group->generic && | |
6539 | nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC)) | |
6540 | goto nla_put_failure; | |
6541 | ||
f9f54392 IS |
6542 | if (group_item->policer_item && |
6543 | nla_put_u32(msg, DEVLINK_ATTR_TRAP_POLICER_ID, | |
6544 | group_item->policer_item->policer->id)) | |
6545 | goto nla_put_failure; | |
6546 | ||
0f420b6c IS |
6547 | err = devlink_trap_stats_put(msg, group_item->stats); |
6548 | if (err) | |
6549 | goto nla_put_failure; | |
6550 | ||
6551 | genlmsg_end(msg, hdr); | |
6552 | ||
6553 | return 0; | |
6554 | ||
6555 | nla_put_failure: | |
6556 | genlmsg_cancel(msg, hdr); | |
6557 | return -EMSGSIZE; | |
6558 | } | |
6559 | ||
6560 | static int devlink_nl_cmd_trap_group_get_doit(struct sk_buff *skb, | |
6561 | struct genl_info *info) | |
6562 | { | |
6563 | struct netlink_ext_ack *extack = info->extack; | |
6564 | struct devlink *devlink = info->user_ptr[0]; | |
6565 | struct devlink_trap_group_item *group_item; | |
6566 | struct sk_buff *msg; | |
6567 | int err; | |
6568 | ||
6569 | if (list_empty(&devlink->trap_group_list)) | |
6570 | return -EOPNOTSUPP; | |
6571 | ||
6572 | group_item = devlink_trap_group_item_get_from_info(devlink, info); | |
6573 | if (!group_item) { | |
6574 | NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group"); | |
6575 | return -ENOENT; | |
6576 | } | |
6577 | ||
6578 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
6579 | if (!msg) | |
6580 | return -ENOMEM; | |
6581 | ||
6582 | err = devlink_nl_trap_group_fill(msg, devlink, group_item, | |
6583 | DEVLINK_CMD_TRAP_GROUP_NEW, | |
6584 | info->snd_portid, info->snd_seq, 0); | |
6585 | if (err) | |
6586 | goto err_trap_group_fill; | |
6587 | ||
6588 | return genlmsg_reply(msg, info); | |
6589 | ||
6590 | err_trap_group_fill: | |
6591 | nlmsg_free(msg); | |
6592 | return err; | |
6593 | } | |
6594 | ||
6595 | static int devlink_nl_cmd_trap_group_get_dumpit(struct sk_buff *msg, | |
6596 | struct netlink_callback *cb) | |
6597 | { | |
6598 | enum devlink_command cmd = DEVLINK_CMD_TRAP_GROUP_NEW; | |
6599 | struct devlink_trap_group_item *group_item; | |
6600 | u32 portid = NETLINK_CB(cb->skb).portid; | |
6601 | struct devlink *devlink; | |
6602 | int start = cb->args[0]; | |
6603 | int idx = 0; | |
6604 | int err; | |
6605 | ||
6606 | mutex_lock(&devlink_mutex); | |
6607 | list_for_each_entry(devlink, &devlink_list, list) { | |
6608 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) | |
6609 | continue; | |
6610 | mutex_lock(&devlink->lock); | |
6611 | list_for_each_entry(group_item, &devlink->trap_group_list, | |
6612 | list) { | |
6613 | if (idx < start) { | |
6614 | idx++; | |
6615 | continue; | |
6616 | } | |
6617 | err = devlink_nl_trap_group_fill(msg, devlink, | |
6618 | group_item, cmd, | |
6619 | portid, | |
6620 | cb->nlh->nlmsg_seq, | |
6621 | NLM_F_MULTI); | |
6622 | if (err) { | |
6623 | mutex_unlock(&devlink->lock); | |
6624 | goto out; | |
6625 | } | |
6626 | idx++; | |
6627 | } | |
6628 | mutex_unlock(&devlink->lock); | |
6629 | } | |
6630 | out: | |
6631 | mutex_unlock(&devlink_mutex); | |
6632 | ||
6633 | cb->args[0] = idx; | |
6634 | return msg->len; | |
6635 | } | |
6636 | ||
6637 | static int | |
6638 | __devlink_trap_group_action_set(struct devlink *devlink, | |
6639 | struct devlink_trap_group_item *group_item, | |
6640 | enum devlink_trap_action trap_action, | |
6641 | struct netlink_ext_ack *extack) | |
6642 | { | |
6643 | const char *group_name = group_item->group->name; | |
6644 | struct devlink_trap_item *trap_item; | |
6645 | int err; | |
6646 | ||
6647 | list_for_each_entry(trap_item, &devlink->trap_list, list) { | |
107f1678 | 6648 | if (strcmp(trap_item->group_item->group->name, group_name)) |
0f420b6c IS |
6649 | continue; |
6650 | err = __devlink_trap_action_set(devlink, trap_item, | |
6651 | trap_action, extack); | |
6652 | if (err) | |
6653 | return err; | |
6654 | } | |
6655 | ||
6656 | return 0; | |
6657 | } | |
6658 | ||
6659 | static int | |
6660 | devlink_trap_group_action_set(struct devlink *devlink, | |
6661 | struct devlink_trap_group_item *group_item, | |
c064875a | 6662 | struct genl_info *info, bool *p_modified) |
0f420b6c IS |
6663 | { |
6664 | enum devlink_trap_action trap_action; | |
6665 | int err; | |
6666 | ||
6667 | if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION]) | |
6668 | return 0; | |
6669 | ||
6670 | err = devlink_trap_action_get_from_info(info, &trap_action); | |
6671 | if (err) { | |
6672 | NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action"); | |
6673 | return -EINVAL; | |
6674 | } | |
6675 | ||
6676 | err = __devlink_trap_group_action_set(devlink, group_item, trap_action, | |
6677 | info->extack); | |
6678 | if (err) | |
6679 | return err; | |
6680 | ||
c064875a IS |
6681 | *p_modified = true; |
6682 | ||
6683 | return 0; | |
6684 | } | |
6685 | ||
6686 | static int devlink_trap_group_set(struct devlink *devlink, | |
6687 | struct devlink_trap_group_item *group_item, | |
6688 | struct genl_info *info) | |
6689 | { | |
6690 | struct devlink_trap_policer_item *policer_item; | |
6691 | struct netlink_ext_ack *extack = info->extack; | |
6692 | const struct devlink_trap_policer *policer; | |
6693 | struct nlattr **attrs = info->attrs; | |
6694 | int err; | |
6695 | ||
6696 | if (!attrs[DEVLINK_ATTR_TRAP_POLICER_ID]) | |
6697 | return 0; | |
6698 | ||
6699 | if (!devlink->ops->trap_group_set) | |
6700 | return -EOPNOTSUPP; | |
6701 | ||
6702 | policer_item = group_item->policer_item; | |
6703 | if (attrs[DEVLINK_ATTR_TRAP_POLICER_ID]) { | |
6704 | u32 policer_id; | |
6705 | ||
6706 | policer_id = nla_get_u32(attrs[DEVLINK_ATTR_TRAP_POLICER_ID]); | |
6707 | policer_item = devlink_trap_policer_item_lookup(devlink, | |
6708 | policer_id); | |
6709 | if (policer_id && !policer_item) { | |
6710 | NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer"); | |
6711 | return -ENOENT; | |
6712 | } | |
6713 | } | |
6714 | policer = policer_item ? policer_item->policer : NULL; | |
6715 | ||
c88e11e0 IS |
6716 | err = devlink->ops->trap_group_set(devlink, group_item->group, policer, |
6717 | extack); | |
c064875a IS |
6718 | if (err) |
6719 | return err; | |
6720 | ||
6721 | group_item->policer_item = policer_item; | |
6722 | ||
0f420b6c IS |
6723 | return 0; |
6724 | } | |
6725 | ||
6726 | static int devlink_nl_cmd_trap_group_set_doit(struct sk_buff *skb, | |
6727 | struct genl_info *info) | |
6728 | { | |
6729 | struct netlink_ext_ack *extack = info->extack; | |
6730 | struct devlink *devlink = info->user_ptr[0]; | |
6731 | struct devlink_trap_group_item *group_item; | |
c064875a | 6732 | bool modified = false; |
0f420b6c IS |
6733 | int err; |
6734 | ||
6735 | if (list_empty(&devlink->trap_group_list)) | |
6736 | return -EOPNOTSUPP; | |
6737 | ||
6738 | group_item = devlink_trap_group_item_get_from_info(devlink, info); | |
6739 | if (!group_item) { | |
6740 | NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group"); | |
6741 | return -ENOENT; | |
6742 | } | |
6743 | ||
c064875a IS |
6744 | err = devlink_trap_group_action_set(devlink, group_item, info, |
6745 | &modified); | |
0f420b6c IS |
6746 | if (err) |
6747 | return err; | |
6748 | ||
c064875a IS |
6749 | err = devlink_trap_group_set(devlink, group_item, info); |
6750 | if (err) | |
6751 | goto err_trap_group_set; | |
6752 | ||
0f420b6c | 6753 | return 0; |
c064875a IS |
6754 | |
6755 | err_trap_group_set: | |
6756 | if (modified) | |
6757 | NL_SET_ERR_MSG_MOD(extack, "Trap group set failed, but some changes were committed already"); | |
6758 | return err; | |
0f420b6c IS |
6759 | } |
6760 | ||
1e8c6619 IS |
6761 | static struct devlink_trap_policer_item * |
6762 | devlink_trap_policer_item_get_from_info(struct devlink *devlink, | |
6763 | struct genl_info *info) | |
6764 | { | |
6765 | u32 id; | |
6766 | ||
6767 | if (!info->attrs[DEVLINK_ATTR_TRAP_POLICER_ID]) | |
6768 | return NULL; | |
6769 | id = nla_get_u32(info->attrs[DEVLINK_ATTR_TRAP_POLICER_ID]); | |
6770 | ||
6771 | return devlink_trap_policer_item_lookup(devlink, id); | |
6772 | } | |
6773 | ||
6774 | static int | |
6775 | devlink_trap_policer_stats_put(struct sk_buff *msg, struct devlink *devlink, | |
6776 | const struct devlink_trap_policer *policer) | |
6777 | { | |
6778 | struct nlattr *attr; | |
6779 | u64 drops; | |
6780 | int err; | |
6781 | ||
6782 | if (!devlink->ops->trap_policer_counter_get) | |
6783 | return 0; | |
6784 | ||
6785 | err = devlink->ops->trap_policer_counter_get(devlink, policer, &drops); | |
6786 | if (err) | |
6787 | return err; | |
6788 | ||
6789 | attr = nla_nest_start(msg, DEVLINK_ATTR_STATS); | |
6790 | if (!attr) | |
6791 | return -EMSGSIZE; | |
6792 | ||
6793 | if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_DROPPED, drops, | |
6794 | DEVLINK_ATTR_PAD)) | |
6795 | goto nla_put_failure; | |
6796 | ||
6797 | nla_nest_end(msg, attr); | |
6798 | ||
6799 | return 0; | |
6800 | ||
6801 | nla_put_failure: | |
6802 | nla_nest_cancel(msg, attr); | |
6803 | return -EMSGSIZE; | |
6804 | } | |
6805 | ||
6806 | static int | |
6807 | devlink_nl_trap_policer_fill(struct sk_buff *msg, struct devlink *devlink, | |
6808 | const struct devlink_trap_policer_item *policer_item, | |
6809 | enum devlink_command cmd, u32 portid, u32 seq, | |
6810 | int flags) | |
6811 | { | |
6812 | void *hdr; | |
6813 | int err; | |
6814 | ||
6815 | hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); | |
6816 | if (!hdr) | |
6817 | return -EMSGSIZE; | |
6818 | ||
6819 | if (devlink_nl_put_handle(msg, devlink)) | |
6820 | goto nla_put_failure; | |
6821 | ||
6822 | if (nla_put_u32(msg, DEVLINK_ATTR_TRAP_POLICER_ID, | |
6823 | policer_item->policer->id)) | |
6824 | goto nla_put_failure; | |
6825 | ||
6826 | if (nla_put_u64_64bit(msg, DEVLINK_ATTR_TRAP_POLICER_RATE, | |
6827 | policer_item->rate, DEVLINK_ATTR_PAD)) | |
6828 | goto nla_put_failure; | |
6829 | ||
6830 | if (nla_put_u64_64bit(msg, DEVLINK_ATTR_TRAP_POLICER_BURST, | |
6831 | policer_item->burst, DEVLINK_ATTR_PAD)) | |
6832 | goto nla_put_failure; | |
6833 | ||
6834 | err = devlink_trap_policer_stats_put(msg, devlink, | |
6835 | policer_item->policer); | |
6836 | if (err) | |
6837 | goto nla_put_failure; | |
6838 | ||
6839 | genlmsg_end(msg, hdr); | |
6840 | ||
6841 | return 0; | |
6842 | ||
6843 | nla_put_failure: | |
6844 | genlmsg_cancel(msg, hdr); | |
6845 | return -EMSGSIZE; | |
6846 | } | |
6847 | ||
6848 | static int devlink_nl_cmd_trap_policer_get_doit(struct sk_buff *skb, | |
6849 | struct genl_info *info) | |
6850 | { | |
6851 | struct devlink_trap_policer_item *policer_item; | |
6852 | struct netlink_ext_ack *extack = info->extack; | |
6853 | struct devlink *devlink = info->user_ptr[0]; | |
6854 | struct sk_buff *msg; | |
6855 | int err; | |
6856 | ||
6857 | if (list_empty(&devlink->trap_policer_list)) | |
6858 | return -EOPNOTSUPP; | |
6859 | ||
6860 | policer_item = devlink_trap_policer_item_get_from_info(devlink, info); | |
6861 | if (!policer_item) { | |
6862 | NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer"); | |
6863 | return -ENOENT; | |
6864 | } | |
6865 | ||
6866 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
6867 | if (!msg) | |
6868 | return -ENOMEM; | |
6869 | ||
6870 | err = devlink_nl_trap_policer_fill(msg, devlink, policer_item, | |
6871 | DEVLINK_CMD_TRAP_POLICER_NEW, | |
6872 | info->snd_portid, info->snd_seq, 0); | |
6873 | if (err) | |
6874 | goto err_trap_policer_fill; | |
6875 | ||
6876 | return genlmsg_reply(msg, info); | |
6877 | ||
6878 | err_trap_policer_fill: | |
6879 | nlmsg_free(msg); | |
6880 | return err; | |
6881 | } | |
6882 | ||
6883 | static int devlink_nl_cmd_trap_policer_get_dumpit(struct sk_buff *msg, | |
6884 | struct netlink_callback *cb) | |
6885 | { | |
6886 | enum devlink_command cmd = DEVLINK_CMD_TRAP_POLICER_NEW; | |
6887 | struct devlink_trap_policer_item *policer_item; | |
6888 | u32 portid = NETLINK_CB(cb->skb).portid; | |
6889 | struct devlink *devlink; | |
6890 | int start = cb->args[0]; | |
6891 | int idx = 0; | |
6892 | int err; | |
6893 | ||
6894 | mutex_lock(&devlink_mutex); | |
6895 | list_for_each_entry(devlink, &devlink_list, list) { | |
6896 | if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) | |
6897 | continue; | |
6898 | mutex_lock(&devlink->lock); | |
6899 | list_for_each_entry(policer_item, &devlink->trap_policer_list, | |
6900 | list) { | |
6901 | if (idx < start) { | |
6902 | idx++; | |
6903 | continue; | |
6904 | } | |
6905 | err = devlink_nl_trap_policer_fill(msg, devlink, | |
6906 | policer_item, cmd, | |
6907 | portid, | |
6908 | cb->nlh->nlmsg_seq, | |
6909 | NLM_F_MULTI); | |
6910 | if (err) { | |
6911 | mutex_unlock(&devlink->lock); | |
6912 | goto out; | |
6913 | } | |
6914 | idx++; | |
6915 | } | |
6916 | mutex_unlock(&devlink->lock); | |
6917 | } | |
6918 | out: | |
6919 | mutex_unlock(&devlink_mutex); | |
6920 | ||
6921 | cb->args[0] = idx; | |
6922 | return msg->len; | |
6923 | } | |
6924 | ||
6925 | static int | |
6926 | devlink_trap_policer_set(struct devlink *devlink, | |
6927 | struct devlink_trap_policer_item *policer_item, | |
6928 | struct genl_info *info) | |
6929 | { | |
6930 | struct netlink_ext_ack *extack = info->extack; | |
6931 | struct nlattr **attrs = info->attrs; | |
6932 | u64 rate, burst; | |
6933 | int err; | |
6934 | ||
6935 | rate = policer_item->rate; | |
6936 | burst = policer_item->burst; | |
6937 | ||
6938 | if (attrs[DEVLINK_ATTR_TRAP_POLICER_RATE]) | |
6939 | rate = nla_get_u64(attrs[DEVLINK_ATTR_TRAP_POLICER_RATE]); | |
6940 | ||
6941 | if (attrs[DEVLINK_ATTR_TRAP_POLICER_BURST]) | |
6942 | burst = nla_get_u64(attrs[DEVLINK_ATTR_TRAP_POLICER_BURST]); | |
6943 | ||
6944 | if (rate < policer_item->policer->min_rate) { | |
6945 | NL_SET_ERR_MSG_MOD(extack, "Policer rate lower than limit"); | |
6946 | return -EINVAL; | |
6947 | } | |
6948 | ||
6949 | if (rate > policer_item->policer->max_rate) { | |
6950 | NL_SET_ERR_MSG_MOD(extack, "Policer rate higher than limit"); | |
6951 | return -EINVAL; | |
6952 | } | |
6953 | ||
6954 | if (burst < policer_item->policer->min_burst) { | |
6955 | NL_SET_ERR_MSG_MOD(extack, "Policer burst size lower than limit"); | |
6956 | return -EINVAL; | |
6957 | } | |
6958 | ||
6959 | if (burst > policer_item->policer->max_burst) { | |
6960 | NL_SET_ERR_MSG_MOD(extack, "Policer burst size higher than limit"); | |
6961 | return -EINVAL; | |
6962 | } | |
6963 | ||
6964 | err = devlink->ops->trap_policer_set(devlink, policer_item->policer, | |
6965 | rate, burst, info->extack); | |
6966 | if (err) | |
6967 | return err; | |
6968 | ||
6969 | policer_item->rate = rate; | |
6970 | policer_item->burst = burst; | |
6971 | ||
6972 | return 0; | |
6973 | } | |
6974 | ||
6975 | static int devlink_nl_cmd_trap_policer_set_doit(struct sk_buff *skb, | |
6976 | struct genl_info *info) | |
6977 | { | |
6978 | struct devlink_trap_policer_item *policer_item; | |
6979 | struct netlink_ext_ack *extack = info->extack; | |
6980 | struct devlink *devlink = info->user_ptr[0]; | |
6981 | ||
6982 | if (list_empty(&devlink->trap_policer_list)) | |
6983 | return -EOPNOTSUPP; | |
6984 | ||
6985 | if (!devlink->ops->trap_policer_set) | |
6986 | return -EOPNOTSUPP; | |
6987 | ||
6988 | policer_item = devlink_trap_policer_item_get_from_info(devlink, info); | |
6989 | if (!policer_item) { | |
6990 | NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer"); | |
6991 | return -ENOENT; | |
6992 | } | |
6993 | ||
6994 | return devlink_trap_policer_set(devlink, policer_item, info); | |
6995 | } | |
6996 | ||
bfcd3a46 | 6997 | static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = { |
1e8c6619 IS |
6998 | [DEVLINK_ATTR_UNSPEC] = { .strict_start_type = |
6999 | DEVLINK_ATTR_TRAP_POLICER_ID }, | |
bfcd3a46 JP |
7000 | [DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING }, |
7001 | [DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING }, | |
7002 | [DEVLINK_ATTR_PORT_INDEX] = { .type = NLA_U32 }, | |
7003 | [DEVLINK_ATTR_PORT_TYPE] = { .type = NLA_U16 }, | |
7004 | [DEVLINK_ATTR_PORT_SPLIT_COUNT] = { .type = NLA_U32 }, | |
bf797471 JP |
7005 | [DEVLINK_ATTR_SB_INDEX] = { .type = NLA_U32 }, |
7006 | [DEVLINK_ATTR_SB_POOL_INDEX] = { .type = NLA_U16 }, | |
7007 | [DEVLINK_ATTR_SB_POOL_TYPE] = { .type = NLA_U8 }, | |
7008 | [DEVLINK_ATTR_SB_POOL_SIZE] = { .type = NLA_U32 }, | |
7009 | [DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE] = { .type = NLA_U8 }, | |
7010 | [DEVLINK_ATTR_SB_THRESHOLD] = { .type = NLA_U32 }, | |
7011 | [DEVLINK_ATTR_SB_TC_INDEX] = { .type = NLA_U16 }, | |
08f4b591 | 7012 | [DEVLINK_ATTR_ESWITCH_MODE] = { .type = NLA_U16 }, |
59bfde01 | 7013 | [DEVLINK_ATTR_ESWITCH_INLINE_MODE] = { .type = NLA_U8 }, |
f43e9b06 | 7014 | [DEVLINK_ATTR_ESWITCH_ENCAP_MODE] = { .type = NLA_U8 }, |
1555d204 AS |
7015 | [DEVLINK_ATTR_DPIPE_TABLE_NAME] = { .type = NLA_NUL_STRING }, |
7016 | [DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED] = { .type = NLA_U8 }, | |
d9f9b9a4 AS |
7017 | [DEVLINK_ATTR_RESOURCE_ID] = { .type = NLA_U64}, |
7018 | [DEVLINK_ATTR_RESOURCE_SIZE] = { .type = NLA_U64}, | |
e3b7ca18 MS |
7019 | [DEVLINK_ATTR_PARAM_NAME] = { .type = NLA_NUL_STRING }, |
7020 | [DEVLINK_ATTR_PARAM_TYPE] = { .type = NLA_U8 }, | |
7021 | [DEVLINK_ATTR_PARAM_VALUE_CMODE] = { .type = NLA_U8 }, | |
d8db7ea5 | 7022 | [DEVLINK_ATTR_REGION_NAME] = { .type = NLA_NUL_STRING }, |
866319bb | 7023 | [DEVLINK_ATTR_REGION_SNAPSHOT_ID] = { .type = NLA_U32 }, |
ff3b63b8 JK |
7024 | [DEVLINK_ATTR_REGION_CHUNK_ADDR] = { .type = NLA_U64 }, |
7025 | [DEVLINK_ATTR_REGION_CHUNK_LEN] = { .type = NLA_U64 }, | |
7afe335a | 7026 | [DEVLINK_ATTR_HEALTH_REPORTER_NAME] = { .type = NLA_NUL_STRING }, |
a1e55ec0 EBE |
7027 | [DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] = { .type = NLA_U64 }, |
7028 | [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER] = { .type = NLA_U8 }, | |
76726ccb JK |
7029 | [DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME] = { .type = NLA_NUL_STRING }, |
7030 | [DEVLINK_ATTR_FLASH_UPDATE_COMPONENT] = { .type = NLA_NUL_STRING }, | |
0f420b6c IS |
7031 | [DEVLINK_ATTR_TRAP_NAME] = { .type = NLA_NUL_STRING }, |
7032 | [DEVLINK_ATTR_TRAP_ACTION] = { .type = NLA_U8 }, | |
7033 | [DEVLINK_ATTR_TRAP_GROUP_NAME] = { .type = NLA_NUL_STRING }, | |
070c63f2 JP |
7034 | [DEVLINK_ATTR_NETNS_PID] = { .type = NLA_U32 }, |
7035 | [DEVLINK_ATTR_NETNS_FD] = { .type = NLA_U32 }, | |
7036 | [DEVLINK_ATTR_NETNS_ID] = { .type = NLA_U32 }, | |
48bb52c8 | 7037 | [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP] = { .type = NLA_U8 }, |
1e8c6619 IS |
7038 | [DEVLINK_ATTR_TRAP_POLICER_ID] = { .type = NLA_U32 }, |
7039 | [DEVLINK_ATTR_TRAP_POLICER_RATE] = { .type = NLA_U64 }, | |
7040 | [DEVLINK_ATTR_TRAP_POLICER_BURST] = { .type = NLA_U64 }, | |
a1e8ae90 | 7041 | [DEVLINK_ATTR_PORT_FUNCTION] = { .type = NLA_NESTED }, |
bfcd3a46 JP |
7042 | }; |
7043 | ||
7044 | static const struct genl_ops devlink_nl_ops[] = { | |
7045 | { | |
7046 | .cmd = DEVLINK_CMD_GET, | |
ef6243ac | 7047 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
bfcd3a46 JP |
7048 | .doit = devlink_nl_cmd_get_doit, |
7049 | .dumpit = devlink_nl_cmd_get_dumpit, | |
bfcd3a46 JP |
7050 | /* can be retrieved by unprivileged users */ |
7051 | }, | |
7052 | { | |
7053 | .cmd = DEVLINK_CMD_PORT_GET, | |
ef6243ac | 7054 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
bfcd3a46 JP |
7055 | .doit = devlink_nl_cmd_port_get_doit, |
7056 | .dumpit = devlink_nl_cmd_port_get_dumpit, | |
bfcd3a46 JP |
7057 | .internal_flags = DEVLINK_NL_FLAG_NEED_PORT, |
7058 | /* can be retrieved by unprivileged users */ | |
7059 | }, | |
7060 | { | |
7061 | .cmd = DEVLINK_CMD_PORT_SET, | |
ef6243ac | 7062 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
bfcd3a46 | 7063 | .doit = devlink_nl_cmd_port_set_doit, |
bfcd3a46 JP |
7064 | .flags = GENL_ADMIN_PERM, |
7065 | .internal_flags = DEVLINK_NL_FLAG_NEED_PORT, | |
7066 | }, | |
7067 | { | |
7068 | .cmd = DEVLINK_CMD_PORT_SPLIT, | |
ef6243ac | 7069 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
bfcd3a46 | 7070 | .doit = devlink_nl_cmd_port_split_doit, |
bfcd3a46 | 7071 | .flags = GENL_ADMIN_PERM, |
637989b5 | 7072 | .internal_flags = DEVLINK_NL_FLAG_NO_LOCK, |
bfcd3a46 JP |
7073 | }, |
7074 | { | |
7075 | .cmd = DEVLINK_CMD_PORT_UNSPLIT, | |
ef6243ac | 7076 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
bfcd3a46 | 7077 | .doit = devlink_nl_cmd_port_unsplit_doit, |
bfcd3a46 | 7078 | .flags = GENL_ADMIN_PERM, |
637989b5 | 7079 | .internal_flags = DEVLINK_NL_FLAG_NO_LOCK, |
bfcd3a46 | 7080 | }, |
bf797471 JP |
7081 | { |
7082 | .cmd = DEVLINK_CMD_SB_GET, | |
ef6243ac | 7083 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
bf797471 JP |
7084 | .doit = devlink_nl_cmd_sb_get_doit, |
7085 | .dumpit = devlink_nl_cmd_sb_get_dumpit, | |
bf797471 JP |
7086 | /* can be retrieved by unprivileged users */ |
7087 | }, | |
7088 | { | |
7089 | .cmd = DEVLINK_CMD_SB_POOL_GET, | |
ef6243ac | 7090 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
bf797471 JP |
7091 | .doit = devlink_nl_cmd_sb_pool_get_doit, |
7092 | .dumpit = devlink_nl_cmd_sb_pool_get_dumpit, | |
bf797471 JP |
7093 | /* can be retrieved by unprivileged users */ |
7094 | }, | |
7095 | { | |
7096 | .cmd = DEVLINK_CMD_SB_POOL_SET, | |
ef6243ac | 7097 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
bf797471 | 7098 | .doit = devlink_nl_cmd_sb_pool_set_doit, |
bf797471 | 7099 | .flags = GENL_ADMIN_PERM, |
bf797471 JP |
7100 | }, |
7101 | { | |
7102 | .cmd = DEVLINK_CMD_SB_PORT_POOL_GET, | |
ef6243ac | 7103 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
bf797471 JP |
7104 | .doit = devlink_nl_cmd_sb_port_pool_get_doit, |
7105 | .dumpit = devlink_nl_cmd_sb_port_pool_get_dumpit, | |
637989b5 | 7106 | .internal_flags = DEVLINK_NL_FLAG_NEED_PORT, |
bf797471 JP |
7107 | /* can be retrieved by unprivileged users */ |
7108 | }, | |
7109 | { | |
7110 | .cmd = DEVLINK_CMD_SB_PORT_POOL_SET, | |
ef6243ac | 7111 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
bf797471 | 7112 | .doit = devlink_nl_cmd_sb_port_pool_set_doit, |
bf797471 | 7113 | .flags = GENL_ADMIN_PERM, |
637989b5 | 7114 | .internal_flags = DEVLINK_NL_FLAG_NEED_PORT, |
bf797471 JP |
7115 | }, |
7116 | { | |
7117 | .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_GET, | |
ef6243ac | 7118 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
bf797471 JP |
7119 | .doit = devlink_nl_cmd_sb_tc_pool_bind_get_doit, |
7120 | .dumpit = devlink_nl_cmd_sb_tc_pool_bind_get_dumpit, | |
637989b5 | 7121 | .internal_flags = DEVLINK_NL_FLAG_NEED_PORT, |
bf797471 JP |
7122 | /* can be retrieved by unprivileged users */ |
7123 | }, | |
7124 | { | |
7125 | .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_SET, | |
ef6243ac | 7126 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
bf797471 | 7127 | .doit = devlink_nl_cmd_sb_tc_pool_bind_set_doit, |
bf797471 | 7128 | .flags = GENL_ADMIN_PERM, |
637989b5 | 7129 | .internal_flags = DEVLINK_NL_FLAG_NEED_PORT, |
bf797471 | 7130 | }, |
df38dafd JP |
7131 | { |
7132 | .cmd = DEVLINK_CMD_SB_OCC_SNAPSHOT, | |
ef6243ac | 7133 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
df38dafd | 7134 | .doit = devlink_nl_cmd_sb_occ_snapshot_doit, |
df38dafd | 7135 | .flags = GENL_ADMIN_PERM, |
df38dafd JP |
7136 | }, |
7137 | { | |
7138 | .cmd = DEVLINK_CMD_SB_OCC_MAX_CLEAR, | |
ef6243ac | 7139 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
df38dafd | 7140 | .doit = devlink_nl_cmd_sb_occ_max_clear_doit, |
df38dafd | 7141 | .flags = GENL_ADMIN_PERM, |
df38dafd | 7142 | }, |
08f4b591 | 7143 | { |
adf200f3 | 7144 | .cmd = DEVLINK_CMD_ESWITCH_GET, |
ef6243ac | 7145 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
adf200f3 | 7146 | .doit = devlink_nl_cmd_eswitch_get_doit, |
08f4b591 | 7147 | .flags = GENL_ADMIN_PERM, |
637989b5 | 7148 | .internal_flags = DEVLINK_NL_FLAG_NO_LOCK, |
08f4b591 OG |
7149 | }, |
7150 | { | |
adf200f3 | 7151 | .cmd = DEVLINK_CMD_ESWITCH_SET, |
ef6243ac | 7152 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
adf200f3 | 7153 | .doit = devlink_nl_cmd_eswitch_set_doit, |
08f4b591 | 7154 | .flags = GENL_ADMIN_PERM, |
637989b5 | 7155 | .internal_flags = DEVLINK_NL_FLAG_NO_LOCK, |
08f4b591 | 7156 | }, |
1555d204 AS |
7157 | { |
7158 | .cmd = DEVLINK_CMD_DPIPE_TABLE_GET, | |
ef6243ac | 7159 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
1555d204 | 7160 | .doit = devlink_nl_cmd_dpipe_table_get, |
67ae686b | 7161 | /* can be retrieved by unprivileged users */ |
1555d204 AS |
7162 | }, |
7163 | { | |
7164 | .cmd = DEVLINK_CMD_DPIPE_ENTRIES_GET, | |
ef6243ac | 7165 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
1555d204 | 7166 | .doit = devlink_nl_cmd_dpipe_entries_get, |
67ae686b | 7167 | /* can be retrieved by unprivileged users */ |
1555d204 AS |
7168 | }, |
7169 | { | |
7170 | .cmd = DEVLINK_CMD_DPIPE_HEADERS_GET, | |
ef6243ac | 7171 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
1555d204 | 7172 | .doit = devlink_nl_cmd_dpipe_headers_get, |
67ae686b | 7173 | /* can be retrieved by unprivileged users */ |
1555d204 AS |
7174 | }, |
7175 | { | |
7176 | .cmd = DEVLINK_CMD_DPIPE_TABLE_COUNTERS_SET, | |
ef6243ac | 7177 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
1555d204 | 7178 | .doit = devlink_nl_cmd_dpipe_table_counters_set, |
1555d204 | 7179 | .flags = GENL_ADMIN_PERM, |
1555d204 | 7180 | }, |
d9f9b9a4 AS |
7181 | { |
7182 | .cmd = DEVLINK_CMD_RESOURCE_SET, | |
ef6243ac | 7183 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
d9f9b9a4 | 7184 | .doit = devlink_nl_cmd_resource_set, |
d9f9b9a4 | 7185 | .flags = GENL_ADMIN_PERM, |
d9f9b9a4 AS |
7186 | }, |
7187 | { | |
7188 | .cmd = DEVLINK_CMD_RESOURCE_DUMP, | |
ef6243ac | 7189 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
d9f9b9a4 | 7190 | .doit = devlink_nl_cmd_resource_dump, |
67ae686b | 7191 | /* can be retrieved by unprivileged users */ |
d9f9b9a4 | 7192 | }, |
2d8dc5bb AS |
7193 | { |
7194 | .cmd = DEVLINK_CMD_RELOAD, | |
ef6243ac | 7195 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
2d8dc5bb | 7196 | .doit = devlink_nl_cmd_reload, |
2d8dc5bb | 7197 | .flags = GENL_ADMIN_PERM, |
637989b5 | 7198 | .internal_flags = DEVLINK_NL_FLAG_NO_LOCK, |
2d8dc5bb | 7199 | }, |
45f05def MS |
7200 | { |
7201 | .cmd = DEVLINK_CMD_PARAM_GET, | |
ef6243ac | 7202 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
45f05def MS |
7203 | .doit = devlink_nl_cmd_param_get_doit, |
7204 | .dumpit = devlink_nl_cmd_param_get_dumpit, | |
45f05def MS |
7205 | /* can be retrieved by unprivileged users */ |
7206 | }, | |
e3b7ca18 MS |
7207 | { |
7208 | .cmd = DEVLINK_CMD_PARAM_SET, | |
ef6243ac | 7209 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
e3b7ca18 | 7210 | .doit = devlink_nl_cmd_param_set_doit, |
e3b7ca18 | 7211 | .flags = GENL_ADMIN_PERM, |
e3b7ca18 | 7212 | }, |
f4601dee VV |
7213 | { |
7214 | .cmd = DEVLINK_CMD_PORT_PARAM_GET, | |
ef6243ac | 7215 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
f4601dee VV |
7216 | .doit = devlink_nl_cmd_port_param_get_doit, |
7217 | .dumpit = devlink_nl_cmd_port_param_get_dumpit, | |
f4601dee VV |
7218 | .internal_flags = DEVLINK_NL_FLAG_NEED_PORT, |
7219 | /* can be retrieved by unprivileged users */ | |
7220 | }, | |
9c54873b VV |
7221 | { |
7222 | .cmd = DEVLINK_CMD_PORT_PARAM_SET, | |
ef6243ac | 7223 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
9c54873b | 7224 | .doit = devlink_nl_cmd_port_param_set_doit, |
9c54873b VV |
7225 | .flags = GENL_ADMIN_PERM, |
7226 | .internal_flags = DEVLINK_NL_FLAG_NEED_PORT, | |
7227 | }, | |
d8db7ea5 AV |
7228 | { |
7229 | .cmd = DEVLINK_CMD_REGION_GET, | |
ef6243ac | 7230 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
d8db7ea5 AV |
7231 | .doit = devlink_nl_cmd_region_get_doit, |
7232 | .dumpit = devlink_nl_cmd_region_get_dumpit, | |
d8db7ea5 | 7233 | .flags = GENL_ADMIN_PERM, |
d8db7ea5 | 7234 | }, |
b9a17abf JK |
7235 | { |
7236 | .cmd = DEVLINK_CMD_REGION_NEW, | |
7237 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, | |
7238 | .doit = devlink_nl_cmd_region_new, | |
7239 | .flags = GENL_ADMIN_PERM, | |
b9a17abf | 7240 | }, |
866319bb AV |
7241 | { |
7242 | .cmd = DEVLINK_CMD_REGION_DEL, | |
ef6243ac | 7243 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
866319bb | 7244 | .doit = devlink_nl_cmd_region_del, |
866319bb | 7245 | .flags = GENL_ADMIN_PERM, |
866319bb | 7246 | }, |
4e54795a AV |
7247 | { |
7248 | .cmd = DEVLINK_CMD_REGION_READ, | |
ee85da53 JP |
7249 | .validate = GENL_DONT_VALIDATE_STRICT | |
7250 | GENL_DONT_VALIDATE_DUMP_STRICT, | |
4e54795a | 7251 | .dumpit = devlink_nl_cmd_region_read_dumpit, |
4e54795a | 7252 | .flags = GENL_ADMIN_PERM, |
4e54795a | 7253 | }, |
f9cf2288 JK |
7254 | { |
7255 | .cmd = DEVLINK_CMD_INFO_GET, | |
ef6243ac | 7256 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
f9cf2288 JK |
7257 | .doit = devlink_nl_cmd_info_get_doit, |
7258 | .dumpit = devlink_nl_cmd_info_get_dumpit, | |
f9cf2288 JK |
7259 | /* can be retrieved by unprivileged users */ |
7260 | }, | |
7afe335a EBE |
7261 | { |
7262 | .cmd = DEVLINK_CMD_HEALTH_REPORTER_GET, | |
ef6243ac | 7263 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
7afe335a EBE |
7264 | .doit = devlink_nl_cmd_health_reporter_get_doit, |
7265 | .dumpit = devlink_nl_cmd_health_reporter_get_dumpit, | |
f4f54166 | 7266 | .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT | |
b587bdaf | 7267 | DEVLINK_NL_FLAG_NO_LOCK, |
7afe335a EBE |
7268 | /* can be retrieved by unprivileged users */ |
7269 | }, | |
a1e55ec0 EBE |
7270 | { |
7271 | .cmd = DEVLINK_CMD_HEALTH_REPORTER_SET, | |
ef6243ac | 7272 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
a1e55ec0 | 7273 | .doit = devlink_nl_cmd_health_reporter_set_doit, |
a1e55ec0 | 7274 | .flags = GENL_ADMIN_PERM, |
f4f54166 | 7275 | .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT | |
b587bdaf | 7276 | DEVLINK_NL_FLAG_NO_LOCK, |
a1e55ec0 | 7277 | }, |
20a0943a EBE |
7278 | { |
7279 | .cmd = DEVLINK_CMD_HEALTH_REPORTER_RECOVER, | |
ef6243ac | 7280 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
20a0943a | 7281 | .doit = devlink_nl_cmd_health_reporter_recover_doit, |
20a0943a | 7282 | .flags = GENL_ADMIN_PERM, |
f4f54166 | 7283 | .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT | |
b587bdaf | 7284 | DEVLINK_NL_FLAG_NO_LOCK, |
20a0943a | 7285 | }, |
fca42a27 EBE |
7286 | { |
7287 | .cmd = DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE, | |
ef6243ac | 7288 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
fca42a27 | 7289 | .doit = devlink_nl_cmd_health_reporter_diagnose_doit, |
fca42a27 | 7290 | .flags = GENL_ADMIN_PERM, |
f4f54166 | 7291 | .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT | |
b587bdaf | 7292 | DEVLINK_NL_FLAG_NO_LOCK, |
fca42a27 | 7293 | }, |
35455e23 EBE |
7294 | { |
7295 | .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET, | |
82a843de JP |
7296 | .validate = GENL_DONT_VALIDATE_STRICT | |
7297 | GENL_DONT_VALIDATE_DUMP_STRICT, | |
e44ef4e4 | 7298 | .dumpit = devlink_nl_cmd_health_reporter_dump_get_dumpit, |
35455e23 | 7299 | .flags = GENL_ADMIN_PERM, |
f4f54166 | 7300 | .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT | |
35455e23 EBE |
7301 | DEVLINK_NL_FLAG_NO_LOCK, |
7302 | }, | |
7303 | { | |
7304 | .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_CLEAR, | |
ef6243ac | 7305 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
35455e23 | 7306 | .doit = devlink_nl_cmd_health_reporter_dump_clear_doit, |
35455e23 | 7307 | .flags = GENL_ADMIN_PERM, |
f4f54166 | 7308 | .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT | |
35455e23 EBE |
7309 | DEVLINK_NL_FLAG_NO_LOCK, |
7310 | }, | |
76726ccb JK |
7311 | { |
7312 | .cmd = DEVLINK_CMD_FLASH_UPDATE, | |
ef6243ac | 7313 | .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
76726ccb | 7314 | .doit = devlink_nl_cmd_flash_update, |
76726ccb | 7315 | .flags = GENL_ADMIN_PERM, |
76726ccb | 7316 | }, |
0f420b6c IS |
7317 | { |
7318 | .cmd = DEVLINK_CMD_TRAP_GET, | |
7319 | .doit = devlink_nl_cmd_trap_get_doit, | |
7320 | .dumpit = devlink_nl_cmd_trap_get_dumpit, | |
0f420b6c IS |
7321 | /* can be retrieved by unprivileged users */ |
7322 | }, | |
7323 | { | |
7324 | .cmd = DEVLINK_CMD_TRAP_SET, | |
7325 | .doit = devlink_nl_cmd_trap_set_doit, | |
7326 | .flags = GENL_ADMIN_PERM, | |
0f420b6c IS |
7327 | }, |
7328 | { | |
7329 | .cmd = DEVLINK_CMD_TRAP_GROUP_GET, | |
7330 | .doit = devlink_nl_cmd_trap_group_get_doit, | |
7331 | .dumpit = devlink_nl_cmd_trap_group_get_dumpit, | |
0f420b6c IS |
7332 | /* can be retrieved by unprivileged users */ |
7333 | }, | |
7334 | { | |
7335 | .cmd = DEVLINK_CMD_TRAP_GROUP_SET, | |
7336 | .doit = devlink_nl_cmd_trap_group_set_doit, | |
7337 | .flags = GENL_ADMIN_PERM, | |
0f420b6c | 7338 | }, |
1e8c6619 IS |
7339 | { |
7340 | .cmd = DEVLINK_CMD_TRAP_POLICER_GET, | |
7341 | .doit = devlink_nl_cmd_trap_policer_get_doit, | |
7342 | .dumpit = devlink_nl_cmd_trap_policer_get_dumpit, | |
1e8c6619 IS |
7343 | /* can be retrieved by unprivileged users */ |
7344 | }, | |
7345 | { | |
7346 | .cmd = DEVLINK_CMD_TRAP_POLICER_SET, | |
7347 | .doit = devlink_nl_cmd_trap_policer_set_doit, | |
7348 | .flags = GENL_ADMIN_PERM, | |
1e8c6619 | 7349 | }, |
bfcd3a46 JP |
7350 | }; |
7351 | ||
56989f6d | 7352 | static struct genl_family devlink_nl_family __ro_after_init = { |
489111e5 JB |
7353 | .name = DEVLINK_GENL_NAME, |
7354 | .version = DEVLINK_GENL_VERSION, | |
7355 | .maxattr = DEVLINK_ATTR_MAX, | |
3b0f31f2 | 7356 | .policy = devlink_nl_policy, |
489111e5 JB |
7357 | .netnsok = true, |
7358 | .pre_doit = devlink_nl_pre_doit, | |
7359 | .post_doit = devlink_nl_post_doit, | |
7360 | .module = THIS_MODULE, | |
7361 | .ops = devlink_nl_ops, | |
7362 | .n_ops = ARRAY_SIZE(devlink_nl_ops), | |
7363 | .mcgrps = devlink_nl_mcgrps, | |
7364 | .n_mcgrps = ARRAY_SIZE(devlink_nl_mcgrps), | |
7365 | }; | |
7366 | ||
bfcd3a46 JP |
7367 | /** |
7368 | * devlink_alloc - Allocate new devlink instance resources | |
7369 | * | |
7370 | * @ops: ops | |
7371 | * @priv_size: size of user private data | |
7372 | * | |
7373 | * Allocate new devlink instance resources, including devlink index | |
7374 | * and name. | |
7375 | */ | |
7376 | struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size) | |
7377 | { | |
7378 | struct devlink *devlink; | |
7379 | ||
be6fe1d8 JK |
7380 | if (WARN_ON(!ops)) |
7381 | return NULL; | |
7382 | ||
bfcd3a46 JP |
7383 | devlink = kzalloc(sizeof(*devlink) + priv_size, GFP_KERNEL); |
7384 | if (!devlink) | |
7385 | return NULL; | |
7386 | devlink->ops = ops; | |
12102436 | 7387 | xa_init_flags(&devlink->snapshot_ids, XA_FLAGS_ALLOC); |
8273fd84 | 7388 | __devlink_net_set(devlink, &init_net); |
bfcd3a46 | 7389 | INIT_LIST_HEAD(&devlink->port_list); |
bf797471 | 7390 | INIT_LIST_HEAD(&devlink->sb_list); |
1555d204 | 7391 | INIT_LIST_HEAD_RCU(&devlink->dpipe_table_list); |
d9f9b9a4 | 7392 | INIT_LIST_HEAD(&devlink->resource_list); |
eabaef18 | 7393 | INIT_LIST_HEAD(&devlink->param_list); |
b16ebe92 | 7394 | INIT_LIST_HEAD(&devlink->region_list); |
a0bdcc59 | 7395 | INIT_LIST_HEAD(&devlink->reporter_list); |
0f420b6c IS |
7396 | INIT_LIST_HEAD(&devlink->trap_list); |
7397 | INIT_LIST_HEAD(&devlink->trap_group_list); | |
1e8c6619 | 7398 | INIT_LIST_HEAD(&devlink->trap_policer_list); |
2406e7e5 | 7399 | mutex_init(&devlink->lock); |
b587bdaf | 7400 | mutex_init(&devlink->reporters_lock); |
bfcd3a46 JP |
7401 | return devlink; |
7402 | } | |
7403 | EXPORT_SYMBOL_GPL(devlink_alloc); | |
7404 | ||
7405 | /** | |
7406 | * devlink_register - Register devlink instance | |
7407 | * | |
7408 | * @devlink: devlink | |
eeaadd82 | 7409 | * @dev: parent device |
bfcd3a46 JP |
7410 | */ |
7411 | int devlink_register(struct devlink *devlink, struct device *dev) | |
7412 | { | |
bfcd3a46 | 7413 | devlink->dev = dev; |
8273fd84 | 7414 | devlink->registered = true; |
6553e561 | 7415 | mutex_lock(&devlink_mutex); |
bfcd3a46 JP |
7416 | list_add_tail(&devlink->list, &devlink_list); |
7417 | devlink_notify(devlink, DEVLINK_CMD_NEW); | |
7418 | mutex_unlock(&devlink_mutex); | |
7419 | return 0; | |
7420 | } | |
7421 | EXPORT_SYMBOL_GPL(devlink_register); | |
7422 | ||
7423 | /** | |
7424 | * devlink_unregister - Unregister devlink instance | |
7425 | * | |
7426 | * @devlink: devlink | |
7427 | */ | |
7428 | void devlink_unregister(struct devlink *devlink) | |
7429 | { | |
7430 | mutex_lock(&devlink_mutex); | |
a0c76345 JP |
7431 | WARN_ON(devlink_reload_supported(devlink) && |
7432 | devlink->reload_enabled); | |
bfcd3a46 JP |
7433 | devlink_notify(devlink, DEVLINK_CMD_DEL); |
7434 | list_del(&devlink->list); | |
7435 | mutex_unlock(&devlink_mutex); | |
7436 | } | |
7437 | EXPORT_SYMBOL_GPL(devlink_unregister); | |
7438 | ||
a0c76345 JP |
7439 | /** |
7440 | * devlink_reload_enable - Enable reload of devlink instance | |
7441 | * | |
7442 | * @devlink: devlink | |
7443 | * | |
7444 | * Should be called at end of device initialization | |
7445 | * process when reload operation is supported. | |
7446 | */ | |
7447 | void devlink_reload_enable(struct devlink *devlink) | |
7448 | { | |
7449 | mutex_lock(&devlink_mutex); | |
7450 | devlink->reload_enabled = true; | |
7451 | mutex_unlock(&devlink_mutex); | |
7452 | } | |
7453 | EXPORT_SYMBOL_GPL(devlink_reload_enable); | |
7454 | ||
7455 | /** | |
7456 | * devlink_reload_disable - Disable reload of devlink instance | |
7457 | * | |
7458 | * @devlink: devlink | |
7459 | * | |
7460 | * Should be called at the beginning of device cleanup | |
7461 | * process when reload operation is supported. | |
7462 | */ | |
7463 | void devlink_reload_disable(struct devlink *devlink) | |
7464 | { | |
7465 | mutex_lock(&devlink_mutex); | |
7466 | /* Mutex is taken which ensures that no reload operation is in | |
7467 | * progress while setting up forbidded flag. | |
7468 | */ | |
7469 | devlink->reload_enabled = false; | |
7470 | mutex_unlock(&devlink_mutex); | |
7471 | } | |
7472 | EXPORT_SYMBOL_GPL(devlink_reload_disable); | |
7473 | ||
bfcd3a46 JP |
7474 | /** |
7475 | * devlink_free - Free devlink instance resources | |
7476 | * | |
7477 | * @devlink: devlink | |
7478 | */ | |
7479 | void devlink_free(struct devlink *devlink) | |
7480 | { | |
b587bdaf | 7481 | mutex_destroy(&devlink->reporters_lock); |
375cf8c6 | 7482 | mutex_destroy(&devlink->lock); |
1e8c6619 | 7483 | WARN_ON(!list_empty(&devlink->trap_policer_list)); |
0f420b6c IS |
7484 | WARN_ON(!list_empty(&devlink->trap_group_list)); |
7485 | WARN_ON(!list_empty(&devlink->trap_list)); | |
b904aada PP |
7486 | WARN_ON(!list_empty(&devlink->reporter_list)); |
7487 | WARN_ON(!list_empty(&devlink->region_list)); | |
7488 | WARN_ON(!list_empty(&devlink->param_list)); | |
7489 | WARN_ON(!list_empty(&devlink->resource_list)); | |
7490 | WARN_ON(!list_empty(&devlink->dpipe_table_list)); | |
7491 | WARN_ON(!list_empty(&devlink->sb_list)); | |
7492 | WARN_ON(!list_empty(&devlink->port_list)); | |
7493 | ||
12102436 JK |
7494 | xa_destroy(&devlink->snapshot_ids); |
7495 | ||
bfcd3a46 JP |
7496 | kfree(devlink); |
7497 | } | |
7498 | EXPORT_SYMBOL_GPL(devlink_free); | |
7499 | ||
136bf27f JP |
7500 | static void devlink_port_type_warn(struct work_struct *work) |
7501 | { | |
7502 | WARN(true, "Type was not set for devlink port."); | |
7503 | } | |
7504 | ||
7505 | static bool devlink_port_type_should_warn(struct devlink_port *devlink_port) | |
7506 | { | |
7507 | /* Ignore CPU and DSA flavours. */ | |
7508 | return devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_CPU && | |
7509 | devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_DSA; | |
7510 | } | |
7511 | ||
4c582234 | 7512 | #define DEVLINK_PORT_TYPE_WARN_TIMEOUT (HZ * 3600) |
136bf27f JP |
7513 | |
7514 | static void devlink_port_type_warn_schedule(struct devlink_port *devlink_port) | |
7515 | { | |
7516 | if (!devlink_port_type_should_warn(devlink_port)) | |
7517 | return; | |
7518 | /* Schedule a work to WARN in case driver does not set port | |
7519 | * type within timeout. | |
7520 | */ | |
7521 | schedule_delayed_work(&devlink_port->type_warn_dw, | |
7522 | DEVLINK_PORT_TYPE_WARN_TIMEOUT); | |
7523 | } | |
7524 | ||
7525 | static void devlink_port_type_warn_cancel(struct devlink_port *devlink_port) | |
7526 | { | |
7527 | if (!devlink_port_type_should_warn(devlink_port)) | |
7528 | return; | |
7529 | cancel_delayed_work_sync(&devlink_port->type_warn_dw); | |
7530 | } | |
7531 | ||
bfcd3a46 JP |
7532 | /** |
7533 | * devlink_port_register - Register devlink port | |
7534 | * | |
7535 | * @devlink: devlink | |
7536 | * @devlink_port: devlink port | |
eeaadd82 | 7537 | * @port_index: driver-specific numerical identifier of the port |
bfcd3a46 JP |
7538 | * |
7539 | * Register devlink port with provided port index. User can use | |
7540 | * any indexing, even hw-related one. devlink_port structure | |
7541 | * is convenient to be embedded inside user driver private structure. | |
7542 | * Note that the caller should take care of zeroing the devlink_port | |
7543 | * structure. | |
7544 | */ | |
7545 | int devlink_port_register(struct devlink *devlink, | |
7546 | struct devlink_port *devlink_port, | |
7547 | unsigned int port_index) | |
7548 | { | |
2406e7e5 | 7549 | mutex_lock(&devlink->lock); |
bfcd3a46 | 7550 | if (devlink_port_index_exists(devlink, port_index)) { |
2406e7e5 | 7551 | mutex_unlock(&devlink->lock); |
bfcd3a46 JP |
7552 | return -EEXIST; |
7553 | } | |
7554 | devlink_port->devlink = devlink; | |
7555 | devlink_port->index = port_index; | |
bfcd3a46 | 7556 | devlink_port->registered = true; |
b8f97554 | 7557 | spin_lock_init(&devlink_port->type_lock); |
bfcd3a46 | 7558 | list_add_tail(&devlink_port->list, &devlink->port_list); |
39e6160e | 7559 | INIT_LIST_HEAD(&devlink_port->param_list); |
2406e7e5 | 7560 | mutex_unlock(&devlink->lock); |
f4f54166 VT |
7561 | INIT_LIST_HEAD(&devlink_port->reporter_list); |
7562 | mutex_init(&devlink_port->reporters_lock); | |
136bf27f JP |
7563 | INIT_DELAYED_WORK(&devlink_port->type_warn_dw, &devlink_port_type_warn); |
7564 | devlink_port_type_warn_schedule(devlink_port); | |
bfcd3a46 JP |
7565 | devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW); |
7566 | return 0; | |
7567 | } | |
7568 | EXPORT_SYMBOL_GPL(devlink_port_register); | |
7569 | ||
7570 | /** | |
7571 | * devlink_port_unregister - Unregister devlink port | |
7572 | * | |
7573 | * @devlink_port: devlink port | |
7574 | */ | |
7575 | void devlink_port_unregister(struct devlink_port *devlink_port) | |
7576 | { | |
2406e7e5 AS |
7577 | struct devlink *devlink = devlink_port->devlink; |
7578 | ||
f4f54166 VT |
7579 | WARN_ON(!list_empty(&devlink_port->reporter_list)); |
7580 | mutex_destroy(&devlink_port->reporters_lock); | |
136bf27f | 7581 | devlink_port_type_warn_cancel(devlink_port); |
bfcd3a46 | 7582 | devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL); |
2406e7e5 | 7583 | mutex_lock(&devlink->lock); |
bfcd3a46 | 7584 | list_del(&devlink_port->list); |
2406e7e5 | 7585 | mutex_unlock(&devlink->lock); |
bfcd3a46 JP |
7586 | } |
7587 | EXPORT_SYMBOL_GPL(devlink_port_unregister); | |
7588 | ||
7589 | static void __devlink_port_type_set(struct devlink_port *devlink_port, | |
7590 | enum devlink_port_type type, | |
7591 | void *type_dev) | |
7592 | { | |
2b239e70 JP |
7593 | if (WARN_ON(!devlink_port->registered)) |
7594 | return; | |
136bf27f | 7595 | devlink_port_type_warn_cancel(devlink_port); |
0f420b6c | 7596 | spin_lock_bh(&devlink_port->type_lock); |
bfcd3a46 JP |
7597 | devlink_port->type = type; |
7598 | devlink_port->type_dev = type_dev; | |
0f420b6c | 7599 | spin_unlock_bh(&devlink_port->type_lock); |
bfcd3a46 JP |
7600 | devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW); |
7601 | } | |
7602 | ||
7603 | /** | |
7604 | * devlink_port_type_eth_set - Set port type to Ethernet | |
7605 | * | |
7606 | * @devlink_port: devlink port | |
7607 | * @netdev: related netdevice | |
7608 | */ | |
7609 | void devlink_port_type_eth_set(struct devlink_port *devlink_port, | |
7610 | struct net_device *netdev) | |
7611 | { | |
119c0b57 JP |
7612 | const struct net_device_ops *ops = netdev->netdev_ops; |
7613 | ||
746364f2 JP |
7614 | /* If driver registers devlink port, it should set devlink port |
7615 | * attributes accordingly so the compat functions are called | |
7616 | * and the original ops are not used. | |
7617 | */ | |
119c0b57 | 7618 | if (ops->ndo_get_phys_port_name) { |
746364f2 JP |
7619 | /* Some drivers use the same set of ndos for netdevs |
7620 | * that have devlink_port registered and also for | |
7621 | * those who don't. Make sure that ndo_get_phys_port_name | |
7622 | * returns -EOPNOTSUPP here in case it is defined. | |
7623 | * Warn if not. | |
7624 | */ | |
746364f2 JP |
7625 | char name[IFNAMSIZ]; |
7626 | int err; | |
7627 | ||
7628 | err = ops->ndo_get_phys_port_name(netdev, name, sizeof(name)); | |
7629 | WARN_ON(err != -EOPNOTSUPP); | |
7630 | } | |
119c0b57 JP |
7631 | if (ops->ndo_get_port_parent_id) { |
7632 | /* Some drivers use the same set of ndos for netdevs | |
7633 | * that have devlink_port registered and also for | |
7634 | * those who don't. Make sure that ndo_get_port_parent_id | |
7635 | * returns -EOPNOTSUPP here in case it is defined. | |
7636 | * Warn if not. | |
7637 | */ | |
7638 | struct netdev_phys_item_id ppid; | |
7639 | int err; | |
7640 | ||
7641 | err = ops->ndo_get_port_parent_id(netdev, &ppid); | |
7642 | WARN_ON(err != -EOPNOTSUPP); | |
7643 | } | |
773b1f38 | 7644 | __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH, netdev); |
bfcd3a46 JP |
7645 | } |
7646 | EXPORT_SYMBOL_GPL(devlink_port_type_eth_set); | |
7647 | ||
7648 | /** | |
7649 | * devlink_port_type_ib_set - Set port type to InfiniBand | |
7650 | * | |
7651 | * @devlink_port: devlink port | |
7652 | * @ibdev: related IB device | |
7653 | */ | |
7654 | void devlink_port_type_ib_set(struct devlink_port *devlink_port, | |
7655 | struct ib_device *ibdev) | |
7656 | { | |
773b1f38 | 7657 | __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_IB, ibdev); |
bfcd3a46 JP |
7658 | } |
7659 | EXPORT_SYMBOL_GPL(devlink_port_type_ib_set); | |
7660 | ||
7661 | /** | |
7662 | * devlink_port_type_clear - Clear port type | |
7663 | * | |
7664 | * @devlink_port: devlink port | |
7665 | */ | |
7666 | void devlink_port_type_clear(struct devlink_port *devlink_port) | |
7667 | { | |
773b1f38 | 7668 | __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET, NULL); |
136bf27f | 7669 | devlink_port_type_warn_schedule(devlink_port); |
bfcd3a46 JP |
7670 | } |
7671 | EXPORT_SYMBOL_GPL(devlink_port_type_clear); | |
7672 | ||
378ef01b | 7673 | static int __devlink_port_attrs_set(struct devlink_port *devlink_port, |
71ad8d55 | 7674 | enum devlink_port_flavour flavour) |
378ef01b PP |
7675 | { |
7676 | struct devlink_port_attrs *attrs = &devlink_port->attrs; | |
7677 | ||
7678 | if (WARN_ON(devlink_port->registered)) | |
7679 | return -EEXIST; | |
10a429ba | 7680 | devlink_port->attrs_set = true; |
378ef01b | 7681 | attrs->flavour = flavour; |
71ad8d55 | 7682 | if (attrs->switch_id.id_len) { |
46737a19 | 7683 | devlink_port->switch_port = true; |
71ad8d55 DR |
7684 | if (WARN_ON(attrs->switch_id.id_len > MAX_PHYS_ITEM_ID_LEN)) |
7685 | attrs->switch_id.id_len = MAX_PHYS_ITEM_ID_LEN; | |
378ef01b | 7686 | } else { |
46737a19 | 7687 | devlink_port->switch_port = false; |
378ef01b PP |
7688 | } |
7689 | return 0; | |
7690 | } | |
7691 | ||
bfcd3a46 | 7692 | /** |
b9ffcbaf | 7693 | * devlink_port_attrs_set - Set port attributes |
bfcd3a46 JP |
7694 | * |
7695 | * @devlink_port: devlink port | |
71ad8d55 | 7696 | * @attrs: devlink port attrs |
bfcd3a46 | 7697 | */ |
b9ffcbaf | 7698 | void devlink_port_attrs_set(struct devlink_port *devlink_port, |
71ad8d55 | 7699 | struct devlink_port_attrs *attrs) |
bfcd3a46 | 7700 | { |
378ef01b | 7701 | int ret; |
b9ffcbaf | 7702 | |
71ad8d55 DR |
7703 | devlink_port->attrs = *attrs; |
7704 | ret = __devlink_port_attrs_set(devlink_port, attrs->flavour); | |
378ef01b | 7705 | if (ret) |
45b86112 | 7706 | return; |
a0f49b54 | 7707 | WARN_ON(attrs->splittable && attrs->split); |
bfcd3a46 | 7708 | } |
b9ffcbaf | 7709 | EXPORT_SYMBOL_GPL(devlink_port_attrs_set); |
bfcd3a46 | 7710 | |
98fd2d65 PP |
7711 | /** |
7712 | * devlink_port_attrs_pci_pf_set - Set PCI PF port attributes | |
7713 | * | |
7714 | * @devlink_port: devlink port | |
7715 | * @pf: associated PF for the devlink port instance | |
98fd2d65 | 7716 | */ |
71ad8d55 | 7717 | void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port, u16 pf) |
98fd2d65 PP |
7718 | { |
7719 | struct devlink_port_attrs *attrs = &devlink_port->attrs; | |
7720 | int ret; | |
7721 | ||
7722 | ret = __devlink_port_attrs_set(devlink_port, | |
71ad8d55 | 7723 | DEVLINK_PORT_FLAVOUR_PCI_PF); |
98fd2d65 PP |
7724 | if (ret) |
7725 | return; | |
7726 | ||
7727 | attrs->pci_pf.pf = pf; | |
7728 | } | |
7729 | EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_pf_set); | |
7730 | ||
e41b6bf3 PP |
7731 | /** |
7732 | * devlink_port_attrs_pci_vf_set - Set PCI VF port attributes | |
7733 | * | |
7734 | * @devlink_port: devlink port | |
7735 | * @pf: associated PF for the devlink port instance | |
7736 | * @vf: associated VF of a PF for the devlink port instance | |
e41b6bf3 PP |
7737 | */ |
7738 | void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port, | |
e41b6bf3 PP |
7739 | u16 pf, u16 vf) |
7740 | { | |
7741 | struct devlink_port_attrs *attrs = &devlink_port->attrs; | |
7742 | int ret; | |
7743 | ||
7744 | ret = __devlink_port_attrs_set(devlink_port, | |
71ad8d55 | 7745 | DEVLINK_PORT_FLAVOUR_PCI_VF); |
e41b6bf3 PP |
7746 | if (ret) |
7747 | return; | |
7748 | attrs->pci_vf.pf = pf; | |
7749 | attrs->pci_vf.vf = vf; | |
7750 | } | |
7751 | EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_vf_set); | |
7752 | ||
af3836df JP |
7753 | static int __devlink_port_phys_port_name_get(struct devlink_port *devlink_port, |
7754 | char *name, size_t len) | |
08474c1a JP |
7755 | { |
7756 | struct devlink_port_attrs *attrs = &devlink_port->attrs; | |
7757 | int n = 0; | |
7758 | ||
10a429ba | 7759 | if (!devlink_port->attrs_set) |
08474c1a JP |
7760 | return -EOPNOTSUPP; |
7761 | ||
7762 | switch (attrs->flavour) { | |
7763 | case DEVLINK_PORT_FLAVOUR_PHYSICAL: | |
acf1ee44 | 7764 | case DEVLINK_PORT_FLAVOUR_VIRTUAL: |
08474c1a | 7765 | if (!attrs->split) |
378ef01b | 7766 | n = snprintf(name, len, "p%u", attrs->phys.port_number); |
08474c1a | 7767 | else |
378ef01b PP |
7768 | n = snprintf(name, len, "p%us%u", |
7769 | attrs->phys.port_number, | |
7770 | attrs->phys.split_subport_number); | |
08474c1a JP |
7771 | break; |
7772 | case DEVLINK_PORT_FLAVOUR_CPU: | |
7773 | case DEVLINK_PORT_FLAVOUR_DSA: | |
7774 | /* As CPU and DSA ports do not have a netdevice associated | |
7775 | * case should not ever happen. | |
7776 | */ | |
7777 | WARN_ON(1); | |
7778 | return -EINVAL; | |
98fd2d65 PP |
7779 | case DEVLINK_PORT_FLAVOUR_PCI_PF: |
7780 | n = snprintf(name, len, "pf%u", attrs->pci_pf.pf); | |
7781 | break; | |
e41b6bf3 PP |
7782 | case DEVLINK_PORT_FLAVOUR_PCI_VF: |
7783 | n = snprintf(name, len, "pf%uvf%u", | |
7784 | attrs->pci_vf.pf, attrs->pci_vf.vf); | |
7785 | break; | |
08474c1a JP |
7786 | } |
7787 | ||
7788 | if (n >= len) | |
7789 | return -EINVAL; | |
7790 | ||
7791 | return 0; | |
7792 | } | |
af3836df | 7793 | |
bf797471 JP |
7794 | int devlink_sb_register(struct devlink *devlink, unsigned int sb_index, |
7795 | u32 size, u16 ingress_pools_count, | |
7796 | u16 egress_pools_count, u16 ingress_tc_count, | |
7797 | u16 egress_tc_count) | |
7798 | { | |
7799 | struct devlink_sb *devlink_sb; | |
7800 | int err = 0; | |
7801 | ||
2406e7e5 | 7802 | mutex_lock(&devlink->lock); |
bf797471 JP |
7803 | if (devlink_sb_index_exists(devlink, sb_index)) { |
7804 | err = -EEXIST; | |
7805 | goto unlock; | |
7806 | } | |
7807 | ||
7808 | devlink_sb = kzalloc(sizeof(*devlink_sb), GFP_KERNEL); | |
7809 | if (!devlink_sb) { | |
7810 | err = -ENOMEM; | |
7811 | goto unlock; | |
7812 | } | |
7813 | devlink_sb->index = sb_index; | |
7814 | devlink_sb->size = size; | |
7815 | devlink_sb->ingress_pools_count = ingress_pools_count; | |
7816 | devlink_sb->egress_pools_count = egress_pools_count; | |
7817 | devlink_sb->ingress_tc_count = ingress_tc_count; | |
7818 | devlink_sb->egress_tc_count = egress_tc_count; | |
7819 | list_add_tail(&devlink_sb->list, &devlink->sb_list); | |
7820 | unlock: | |
2406e7e5 | 7821 | mutex_unlock(&devlink->lock); |
bf797471 JP |
7822 | return err; |
7823 | } | |
7824 | EXPORT_SYMBOL_GPL(devlink_sb_register); | |
7825 | ||
7826 | void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index) | |
7827 | { | |
7828 | struct devlink_sb *devlink_sb; | |
7829 | ||
2406e7e5 | 7830 | mutex_lock(&devlink->lock); |
bf797471 JP |
7831 | devlink_sb = devlink_sb_get_by_index(devlink, sb_index); |
7832 | WARN_ON(!devlink_sb); | |
7833 | list_del(&devlink_sb->list); | |
2406e7e5 | 7834 | mutex_unlock(&devlink->lock); |
bf797471 JP |
7835 | kfree(devlink_sb); |
7836 | } | |
7837 | EXPORT_SYMBOL_GPL(devlink_sb_unregister); | |
7838 | ||
1555d204 AS |
7839 | /** |
7840 | * devlink_dpipe_headers_register - register dpipe headers | |
7841 | * | |
7842 | * @devlink: devlink | |
7843 | * @dpipe_headers: dpipe header array | |
7844 | * | |
7845 | * Register the headers supported by hardware. | |
7846 | */ | |
7847 | int devlink_dpipe_headers_register(struct devlink *devlink, | |
7848 | struct devlink_dpipe_headers *dpipe_headers) | |
7849 | { | |
2406e7e5 | 7850 | mutex_lock(&devlink->lock); |
1555d204 | 7851 | devlink->dpipe_headers = dpipe_headers; |
2406e7e5 | 7852 | mutex_unlock(&devlink->lock); |
1555d204 AS |
7853 | return 0; |
7854 | } | |
7855 | EXPORT_SYMBOL_GPL(devlink_dpipe_headers_register); | |
7856 | ||
7857 | /** | |
7858 | * devlink_dpipe_headers_unregister - unregister dpipe headers | |
7859 | * | |
7860 | * @devlink: devlink | |
7861 | * | |
7862 | * Unregister the headers supported by hardware. | |
7863 | */ | |
7864 | void devlink_dpipe_headers_unregister(struct devlink *devlink) | |
7865 | { | |
2406e7e5 | 7866 | mutex_lock(&devlink->lock); |
1555d204 | 7867 | devlink->dpipe_headers = NULL; |
2406e7e5 | 7868 | mutex_unlock(&devlink->lock); |
1555d204 AS |
7869 | } |
7870 | EXPORT_SYMBOL_GPL(devlink_dpipe_headers_unregister); | |
7871 | ||
7872 | /** | |
7873 | * devlink_dpipe_table_counter_enabled - check if counter allocation | |
7874 | * required | |
7875 | * @devlink: devlink | |
7876 | * @table_name: tables name | |
7877 | * | |
7878 | * Used by driver to check if counter allocation is required. | |
7879 | * After counter allocation is turned on the table entries | |
7880 | * are updated to include counter statistics. | |
7881 | * | |
7882 | * After that point on the driver must respect the counter | |
7883 | * state so that each entry added to the table is added | |
7884 | * with a counter. | |
7885 | */ | |
7886 | bool devlink_dpipe_table_counter_enabled(struct devlink *devlink, | |
7887 | const char *table_name) | |
7888 | { | |
7889 | struct devlink_dpipe_table *table; | |
7890 | bool enabled; | |
7891 | ||
7892 | rcu_read_lock(); | |
7893 | table = devlink_dpipe_table_find(&devlink->dpipe_table_list, | |
2eb51c75 | 7894 | table_name, devlink); |
1555d204 AS |
7895 | enabled = false; |
7896 | if (table) | |
7897 | enabled = table->counters_enabled; | |
7898 | rcu_read_unlock(); | |
7899 | return enabled; | |
7900 | } | |
7901 | EXPORT_SYMBOL_GPL(devlink_dpipe_table_counter_enabled); | |
7902 | ||
7903 | /** | |
7904 | * devlink_dpipe_table_register - register dpipe table | |
7905 | * | |
7906 | * @devlink: devlink | |
7907 | * @table_name: table name | |
7908 | * @table_ops: table ops | |
7909 | * @priv: priv | |
1555d204 AS |
7910 | * @counter_control_extern: external control for counters |
7911 | */ | |
7912 | int devlink_dpipe_table_register(struct devlink *devlink, | |
7913 | const char *table_name, | |
7914 | struct devlink_dpipe_table_ops *table_ops, | |
ffd3cdcc | 7915 | void *priv, bool counter_control_extern) |
1555d204 AS |
7916 | { |
7917 | struct devlink_dpipe_table *table; | |
6132c1d9 | 7918 | int err = 0; |
1555d204 | 7919 | |
ffd3cdcc AS |
7920 | if (WARN_ON(!table_ops->size_get)) |
7921 | return -EINVAL; | |
7922 | ||
6132c1d9 MB |
7923 | mutex_lock(&devlink->lock); |
7924 | ||
2eb51c75 MB |
7925 | if (devlink_dpipe_table_find(&devlink->dpipe_table_list, table_name, |
7926 | devlink)) { | |
6132c1d9 MB |
7927 | err = -EEXIST; |
7928 | goto unlock; | |
7929 | } | |
7930 | ||
1555d204 | 7931 | table = kzalloc(sizeof(*table), GFP_KERNEL); |
6132c1d9 MB |
7932 | if (!table) { |
7933 | err = -ENOMEM; | |
7934 | goto unlock; | |
7935 | } | |
1555d204 AS |
7936 | |
7937 | table->name = table_name; | |
7938 | table->table_ops = table_ops; | |
7939 | table->priv = priv; | |
1555d204 AS |
7940 | table->counter_control_extern = counter_control_extern; |
7941 | ||
1555d204 | 7942 | list_add_tail_rcu(&table->list, &devlink->dpipe_table_list); |
6132c1d9 | 7943 | unlock: |
2406e7e5 | 7944 | mutex_unlock(&devlink->lock); |
6132c1d9 | 7945 | return err; |
1555d204 AS |
7946 | } |
7947 | EXPORT_SYMBOL_GPL(devlink_dpipe_table_register); | |
7948 | ||
7949 | /** | |
7950 | * devlink_dpipe_table_unregister - unregister dpipe table | |
7951 | * | |
7952 | * @devlink: devlink | |
7953 | * @table_name: table name | |
7954 | */ | |
7955 | void devlink_dpipe_table_unregister(struct devlink *devlink, | |
7956 | const char *table_name) | |
7957 | { | |
7958 | struct devlink_dpipe_table *table; | |
7959 | ||
2406e7e5 | 7960 | mutex_lock(&devlink->lock); |
1555d204 | 7961 | table = devlink_dpipe_table_find(&devlink->dpipe_table_list, |
2eb51c75 | 7962 | table_name, devlink); |
1555d204 AS |
7963 | if (!table) |
7964 | goto unlock; | |
7965 | list_del_rcu(&table->list); | |
2406e7e5 | 7966 | mutex_unlock(&devlink->lock); |
1555d204 AS |
7967 | kfree_rcu(table, rcu); |
7968 | return; | |
7969 | unlock: | |
2406e7e5 | 7970 | mutex_unlock(&devlink->lock); |
1555d204 AS |
7971 | } |
7972 | EXPORT_SYMBOL_GPL(devlink_dpipe_table_unregister); | |
7973 | ||
d9f9b9a4 AS |
7974 | /** |
7975 | * devlink_resource_register - devlink resource register | |
7976 | * | |
7977 | * @devlink: devlink | |
7978 | * @resource_name: resource's name | |
d9f9b9a4 AS |
7979 | * @resource_size: resource's size |
7980 | * @resource_id: resource's id | |
eeaadd82 JK |
7981 | * @parent_resource_id: resource's parent id |
7982 | * @size_params: size parameters | |
d9f9b9a4 AS |
7983 | */ |
7984 | int devlink_resource_register(struct devlink *devlink, | |
7985 | const char *resource_name, | |
d9f9b9a4 AS |
7986 | u64 resource_size, |
7987 | u64 resource_id, | |
7988 | u64 parent_resource_id, | |
fc56be47 | 7989 | const struct devlink_resource_size_params *size_params) |
d9f9b9a4 AS |
7990 | { |
7991 | struct devlink_resource *resource; | |
7992 | struct list_head *resource_list; | |
14530746 | 7993 | bool top_hierarchy; |
d9f9b9a4 AS |
7994 | int err = 0; |
7995 | ||
14530746 DA |
7996 | top_hierarchy = parent_resource_id == DEVLINK_RESOURCE_ID_PARENT_TOP; |
7997 | ||
d9f9b9a4 AS |
7998 | mutex_lock(&devlink->lock); |
7999 | resource = devlink_resource_find(devlink, NULL, resource_id); | |
8000 | if (resource) { | |
8001 | err = -EINVAL; | |
8002 | goto out; | |
8003 | } | |
8004 | ||
8005 | resource = kzalloc(sizeof(*resource), GFP_KERNEL); | |
8006 | if (!resource) { | |
8007 | err = -ENOMEM; | |
8008 | goto out; | |
8009 | } | |
8010 | ||
8011 | if (top_hierarchy) { | |
8012 | resource_list = &devlink->resource_list; | |
8013 | } else { | |
8014 | struct devlink_resource *parent_resource; | |
8015 | ||
8016 | parent_resource = devlink_resource_find(devlink, NULL, | |
8017 | parent_resource_id); | |
8018 | if (parent_resource) { | |
8019 | resource_list = &parent_resource->resource_list; | |
8020 | resource->parent = parent_resource; | |
8021 | } else { | |
b75703de | 8022 | kfree(resource); |
d9f9b9a4 AS |
8023 | err = -EINVAL; |
8024 | goto out; | |
8025 | } | |
8026 | } | |
8027 | ||
8028 | resource->name = resource_name; | |
8029 | resource->size = resource_size; | |
8030 | resource->size_new = resource_size; | |
8031 | resource->id = resource_id; | |
d9f9b9a4 | 8032 | resource->size_valid = true; |
77d27096 JP |
8033 | memcpy(&resource->size_params, size_params, |
8034 | sizeof(resource->size_params)); | |
d9f9b9a4 AS |
8035 | INIT_LIST_HEAD(&resource->resource_list); |
8036 | list_add_tail(&resource->list, resource_list); | |
8037 | out: | |
8038 | mutex_unlock(&devlink->lock); | |
8039 | return err; | |
8040 | } | |
8041 | EXPORT_SYMBOL_GPL(devlink_resource_register); | |
8042 | ||
8043 | /** | |
8044 | * devlink_resources_unregister - free all resources | |
8045 | * | |
8046 | * @devlink: devlink | |
8047 | * @resource: resource | |
8048 | */ | |
8049 | void devlink_resources_unregister(struct devlink *devlink, | |
8050 | struct devlink_resource *resource) | |
8051 | { | |
8052 | struct devlink_resource *tmp, *child_resource; | |
8053 | struct list_head *resource_list; | |
8054 | ||
8055 | if (resource) | |
8056 | resource_list = &resource->resource_list; | |
8057 | else | |
8058 | resource_list = &devlink->resource_list; | |
8059 | ||
8060 | if (!resource) | |
8061 | mutex_lock(&devlink->lock); | |
8062 | ||
8063 | list_for_each_entry_safe(child_resource, tmp, resource_list, list) { | |
8064 | devlink_resources_unregister(devlink, child_resource); | |
8065 | list_del(&child_resource->list); | |
8066 | kfree(child_resource); | |
8067 | } | |
8068 | ||
8069 | if (!resource) | |
8070 | mutex_unlock(&devlink->lock); | |
8071 | } | |
8072 | EXPORT_SYMBOL_GPL(devlink_resources_unregister); | |
8073 | ||
8074 | /** | |
8075 | * devlink_resource_size_get - get and update size | |
8076 | * | |
8077 | * @devlink: devlink | |
8078 | * @resource_id: the requested resource id | |
8079 | * @p_resource_size: ptr to update | |
8080 | */ | |
8081 | int devlink_resource_size_get(struct devlink *devlink, | |
8082 | u64 resource_id, | |
8083 | u64 *p_resource_size) | |
8084 | { | |
8085 | struct devlink_resource *resource; | |
8086 | int err = 0; | |
8087 | ||
8088 | mutex_lock(&devlink->lock); | |
8089 | resource = devlink_resource_find(devlink, NULL, resource_id); | |
8090 | if (!resource) { | |
8091 | err = -EINVAL; | |
8092 | goto out; | |
8093 | } | |
8094 | *p_resource_size = resource->size_new; | |
8095 | resource->size = resource->size_new; | |
8096 | out: | |
8097 | mutex_unlock(&devlink->lock); | |
8098 | return err; | |
8099 | } | |
8100 | EXPORT_SYMBOL_GPL(devlink_resource_size_get); | |
8101 | ||
56dc7cd0 AS |
8102 | /** |
8103 | * devlink_dpipe_table_resource_set - set the resource id | |
8104 | * | |
8105 | * @devlink: devlink | |
8106 | * @table_name: table name | |
8107 | * @resource_id: resource id | |
8108 | * @resource_units: number of resource's units consumed per table's entry | |
8109 | */ | |
8110 | int devlink_dpipe_table_resource_set(struct devlink *devlink, | |
8111 | const char *table_name, u64 resource_id, | |
8112 | u64 resource_units) | |
8113 | { | |
8114 | struct devlink_dpipe_table *table; | |
8115 | int err = 0; | |
8116 | ||
8117 | mutex_lock(&devlink->lock); | |
8118 | table = devlink_dpipe_table_find(&devlink->dpipe_table_list, | |
2eb51c75 | 8119 | table_name, devlink); |
56dc7cd0 AS |
8120 | if (!table) { |
8121 | err = -EINVAL; | |
8122 | goto out; | |
8123 | } | |
8124 | table->resource_id = resource_id; | |
8125 | table->resource_units = resource_units; | |
8126 | table->resource_valid = true; | |
8127 | out: | |
8128 | mutex_unlock(&devlink->lock); | |
8129 | return err; | |
8130 | } | |
8131 | EXPORT_SYMBOL_GPL(devlink_dpipe_table_resource_set); | |
8132 | ||
fc56be47 JP |
8133 | /** |
8134 | * devlink_resource_occ_get_register - register occupancy getter | |
8135 | * | |
8136 | * @devlink: devlink | |
8137 | * @resource_id: resource id | |
8138 | * @occ_get: occupancy getter callback | |
8139 | * @occ_get_priv: occupancy getter callback priv | |
8140 | */ | |
8141 | void devlink_resource_occ_get_register(struct devlink *devlink, | |
8142 | u64 resource_id, | |
8143 | devlink_resource_occ_get_t *occ_get, | |
8144 | void *occ_get_priv) | |
8145 | { | |
8146 | struct devlink_resource *resource; | |
8147 | ||
8148 | mutex_lock(&devlink->lock); | |
8149 | resource = devlink_resource_find(devlink, NULL, resource_id); | |
8150 | if (WARN_ON(!resource)) | |
8151 | goto out; | |
8152 | WARN_ON(resource->occ_get); | |
8153 | ||
8154 | resource->occ_get = occ_get; | |
8155 | resource->occ_get_priv = occ_get_priv; | |
8156 | out: | |
8157 | mutex_unlock(&devlink->lock); | |
8158 | } | |
8159 | EXPORT_SYMBOL_GPL(devlink_resource_occ_get_register); | |
8160 | ||
8161 | /** | |
8162 | * devlink_resource_occ_get_unregister - unregister occupancy getter | |
8163 | * | |
8164 | * @devlink: devlink | |
8165 | * @resource_id: resource id | |
8166 | */ | |
8167 | void devlink_resource_occ_get_unregister(struct devlink *devlink, | |
8168 | u64 resource_id) | |
8169 | { | |
8170 | struct devlink_resource *resource; | |
8171 | ||
8172 | mutex_lock(&devlink->lock); | |
8173 | resource = devlink_resource_find(devlink, NULL, resource_id); | |
8174 | if (WARN_ON(!resource)) | |
8175 | goto out; | |
8176 | WARN_ON(!resource->occ_get); | |
8177 | ||
8178 | resource->occ_get = NULL; | |
8179 | resource->occ_get_priv = NULL; | |
8180 | out: | |
8181 | mutex_unlock(&devlink->lock); | |
8182 | } | |
8183 | EXPORT_SYMBOL_GPL(devlink_resource_occ_get_unregister); | |
8184 | ||
39e6160e VV |
8185 | static int devlink_param_verify(const struct devlink_param *param) |
8186 | { | |
8187 | if (!param || !param->name || !param->supported_cmodes) | |
8188 | return -EINVAL; | |
8189 | if (param->generic) | |
8190 | return devlink_param_generic_verify(param); | |
8191 | else | |
8192 | return devlink_param_driver_verify(param); | |
8193 | } | |
8194 | ||
8195 | static int __devlink_params_register(struct devlink *devlink, | |
c1e5786d | 8196 | unsigned int port_index, |
39e6160e VV |
8197 | struct list_head *param_list, |
8198 | const struct devlink_param *params, | |
c1e5786d VV |
8199 | size_t params_count, |
8200 | enum devlink_command reg_cmd, | |
8201 | enum devlink_command unreg_cmd) | |
eabaef18 MS |
8202 | { |
8203 | const struct devlink_param *param = params; | |
8204 | int i; | |
8205 | int err; | |
8206 | ||
8207 | mutex_lock(&devlink->lock); | |
8208 | for (i = 0; i < params_count; i++, param++) { | |
39e6160e VV |
8209 | err = devlink_param_verify(param); |
8210 | if (err) | |
eabaef18 | 8211 | goto rollback; |
39e6160e | 8212 | |
c1e5786d VV |
8213 | err = devlink_param_register_one(devlink, port_index, |
8214 | param_list, param, reg_cmd); | |
eabaef18 MS |
8215 | if (err) |
8216 | goto rollback; | |
8217 | } | |
8218 | ||
8219 | mutex_unlock(&devlink->lock); | |
8220 | return 0; | |
8221 | ||
8222 | rollback: | |
8223 | if (!i) | |
8224 | goto unlock; | |
8225 | for (param--; i > 0; i--, param--) | |
c1e5786d VV |
8226 | devlink_param_unregister_one(devlink, port_index, param_list, |
8227 | param, unreg_cmd); | |
eabaef18 MS |
8228 | unlock: |
8229 | mutex_unlock(&devlink->lock); | |
8230 | return err; | |
8231 | } | |
39e6160e VV |
8232 | |
8233 | static void __devlink_params_unregister(struct devlink *devlink, | |
c1e5786d | 8234 | unsigned int port_index, |
39e6160e VV |
8235 | struct list_head *param_list, |
8236 | const struct devlink_param *params, | |
c1e5786d VV |
8237 | size_t params_count, |
8238 | enum devlink_command cmd) | |
39e6160e VV |
8239 | { |
8240 | const struct devlink_param *param = params; | |
8241 | int i; | |
8242 | ||
8243 | mutex_lock(&devlink->lock); | |
8244 | for (i = 0; i < params_count; i++, param++) | |
c1e5786d VV |
8245 | devlink_param_unregister_one(devlink, 0, param_list, param, |
8246 | cmd); | |
39e6160e VV |
8247 | mutex_unlock(&devlink->lock); |
8248 | } | |
8249 | ||
8250 | /** | |
8251 | * devlink_params_register - register configuration parameters | |
8252 | * | |
8253 | * @devlink: devlink | |
8254 | * @params: configuration parameters array | |
8255 | * @params_count: number of parameters provided | |
8256 | * | |
8257 | * Register the configuration parameters supported by the driver. | |
8258 | */ | |
8259 | int devlink_params_register(struct devlink *devlink, | |
8260 | const struct devlink_param *params, | |
8261 | size_t params_count) | |
8262 | { | |
c1e5786d VV |
8263 | return __devlink_params_register(devlink, 0, &devlink->param_list, |
8264 | params, params_count, | |
8265 | DEVLINK_CMD_PARAM_NEW, | |
8266 | DEVLINK_CMD_PARAM_DEL); | |
39e6160e | 8267 | } |
eabaef18 MS |
8268 | EXPORT_SYMBOL_GPL(devlink_params_register); |
8269 | ||
8270 | /** | |
8271 | * devlink_params_unregister - unregister configuration parameters | |
8272 | * @devlink: devlink | |
8273 | * @params: configuration parameters to unregister | |
8274 | * @params_count: number of parameters provided | |
8275 | */ | |
8276 | void devlink_params_unregister(struct devlink *devlink, | |
8277 | const struct devlink_param *params, | |
8278 | size_t params_count) | |
8279 | { | |
c1e5786d VV |
8280 | return __devlink_params_unregister(devlink, 0, &devlink->param_list, |
8281 | params, params_count, | |
8282 | DEVLINK_CMD_PARAM_DEL); | |
eabaef18 MS |
8283 | } |
8284 | EXPORT_SYMBOL_GPL(devlink_params_unregister); | |
8285 | ||
7c62cfb8 JP |
8286 | /** |
8287 | * devlink_params_publish - publish configuration parameters | |
8288 | * | |
8289 | * @devlink: devlink | |
8290 | * | |
8291 | * Publish previously registered configuration parameters. | |
8292 | */ | |
8293 | void devlink_params_publish(struct devlink *devlink) | |
8294 | { | |
8295 | struct devlink_param_item *param_item; | |
8296 | ||
8297 | list_for_each_entry(param_item, &devlink->param_list, list) { | |
8298 | if (param_item->published) | |
8299 | continue; | |
8300 | param_item->published = true; | |
8301 | devlink_param_notify(devlink, 0, param_item, | |
8302 | DEVLINK_CMD_PARAM_NEW); | |
8303 | } | |
8304 | } | |
8305 | EXPORT_SYMBOL_GPL(devlink_params_publish); | |
8306 | ||
8307 | /** | |
8308 | * devlink_params_unpublish - unpublish configuration parameters | |
8309 | * | |
8310 | * @devlink: devlink | |
8311 | * | |
8312 | * Unpublish previously registered configuration parameters. | |
8313 | */ | |
8314 | void devlink_params_unpublish(struct devlink *devlink) | |
8315 | { | |
8316 | struct devlink_param_item *param_item; | |
8317 | ||
8318 | list_for_each_entry(param_item, &devlink->param_list, list) { | |
8319 | if (!param_item->published) | |
8320 | continue; | |
8321 | param_item->published = false; | |
8322 | devlink_param_notify(devlink, 0, param_item, | |
8323 | DEVLINK_CMD_PARAM_DEL); | |
8324 | } | |
8325 | } | |
8326 | EXPORT_SYMBOL_GPL(devlink_params_unpublish); | |
8327 | ||
39e6160e VV |
8328 | /** |
8329 | * devlink_port_params_register - register port configuration parameters | |
8330 | * | |
8331 | * @devlink_port: devlink port | |
8332 | * @params: configuration parameters array | |
8333 | * @params_count: number of parameters provided | |
8334 | * | |
8335 | * Register the configuration parameters supported by the port. | |
8336 | */ | |
8337 | int devlink_port_params_register(struct devlink_port *devlink_port, | |
8338 | const struct devlink_param *params, | |
8339 | size_t params_count) | |
8340 | { | |
8341 | return __devlink_params_register(devlink_port->devlink, | |
c1e5786d | 8342 | devlink_port->index, |
39e6160e | 8343 | &devlink_port->param_list, params, |
c1e5786d VV |
8344 | params_count, |
8345 | DEVLINK_CMD_PORT_PARAM_NEW, | |
8346 | DEVLINK_CMD_PORT_PARAM_DEL); | |
39e6160e VV |
8347 | } |
8348 | EXPORT_SYMBOL_GPL(devlink_port_params_register); | |
8349 | ||
8350 | /** | |
8351 | * devlink_port_params_unregister - unregister port configuration | |
8352 | * parameters | |
8353 | * | |
8354 | * @devlink_port: devlink port | |
8355 | * @params: configuration parameters array | |
8356 | * @params_count: number of parameters provided | |
8357 | */ | |
8358 | void devlink_port_params_unregister(struct devlink_port *devlink_port, | |
8359 | const struct devlink_param *params, | |
8360 | size_t params_count) | |
8361 | { | |
8362 | return __devlink_params_unregister(devlink_port->devlink, | |
c1e5786d | 8363 | devlink_port->index, |
39e6160e | 8364 | &devlink_port->param_list, |
c1e5786d VV |
8365 | params, params_count, |
8366 | DEVLINK_CMD_PORT_PARAM_DEL); | |
39e6160e VV |
8367 | } |
8368 | EXPORT_SYMBOL_GPL(devlink_port_params_unregister); | |
8369 | ||
ffd19b9a VV |
8370 | static int |
8371 | __devlink_param_driverinit_value_get(struct list_head *param_list, u32 param_id, | |
8372 | union devlink_param_value *init_val) | |
ec01aeb1 MS |
8373 | { |
8374 | struct devlink_param_item *param_item; | |
8375 | ||
ffd19b9a | 8376 | param_item = devlink_param_find_by_id(param_list, param_id); |
ec01aeb1 MS |
8377 | if (!param_item) |
8378 | return -EINVAL; | |
8379 | ||
8380 | if (!param_item->driverinit_value_valid || | |
8381 | !devlink_param_cmode_is_supported(param_item->param, | |
8382 | DEVLINK_PARAM_CMODE_DRIVERINIT)) | |
8383 | return -EOPNOTSUPP; | |
8384 | ||
1276534c MS |
8385 | if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING) |
8386 | strcpy(init_val->vstr, param_item->driverinit_value.vstr); | |
8387 | else | |
8388 | *init_val = param_item->driverinit_value; | |
ec01aeb1 MS |
8389 | |
8390 | return 0; | |
8391 | } | |
ffd19b9a | 8392 | |
5473a7bd VV |
8393 | static int |
8394 | __devlink_param_driverinit_value_set(struct devlink *devlink, | |
c1e5786d | 8395 | unsigned int port_index, |
5473a7bd VV |
8396 | struct list_head *param_list, u32 param_id, |
8397 | union devlink_param_value init_val, | |
8398 | enum devlink_command cmd) | |
8399 | { | |
8400 | struct devlink_param_item *param_item; | |
8401 | ||
8402 | param_item = devlink_param_find_by_id(param_list, param_id); | |
8403 | if (!param_item) | |
8404 | return -EINVAL; | |
8405 | ||
8406 | if (!devlink_param_cmode_is_supported(param_item->param, | |
8407 | DEVLINK_PARAM_CMODE_DRIVERINIT)) | |
8408 | return -EOPNOTSUPP; | |
8409 | ||
8410 | if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING) | |
8411 | strcpy(param_item->driverinit_value.vstr, init_val.vstr); | |
8412 | else | |
8413 | param_item->driverinit_value = init_val; | |
8414 | param_item->driverinit_value_valid = true; | |
8415 | ||
c1e5786d | 8416 | devlink_param_notify(devlink, port_index, param_item, cmd); |
5473a7bd VV |
8417 | return 0; |
8418 | } | |
8419 | ||
ffd19b9a VV |
8420 | /** |
8421 | * devlink_param_driverinit_value_get - get configuration parameter | |
8422 | * value for driver initializing | |
8423 | * | |
8424 | * @devlink: devlink | |
8425 | * @param_id: parameter ID | |
8426 | * @init_val: value of parameter in driverinit configuration mode | |
8427 | * | |
8428 | * This function should be used by the driver to get driverinit | |
8429 | * configuration for initialization after reload command. | |
8430 | */ | |
8431 | int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id, | |
8432 | union devlink_param_value *init_val) | |
8433 | { | |
97691069 | 8434 | if (!devlink_reload_supported(devlink)) |
ffd19b9a VV |
8435 | return -EOPNOTSUPP; |
8436 | ||
8437 | return __devlink_param_driverinit_value_get(&devlink->param_list, | |
8438 | param_id, init_val); | |
8439 | } | |
ec01aeb1 MS |
8440 | EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_get); |
8441 | ||
8442 | /** | |
8443 | * devlink_param_driverinit_value_set - set value of configuration | |
8444 | * parameter for driverinit | |
8445 | * configuration mode | |
8446 | * | |
8447 | * @devlink: devlink | |
8448 | * @param_id: parameter ID | |
8449 | * @init_val: value of parameter to set for driverinit configuration mode | |
8450 | * | |
8451 | * This function should be used by the driver to set driverinit | |
8452 | * configuration mode default value. | |
8453 | */ | |
8454 | int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id, | |
8455 | union devlink_param_value init_val) | |
8456 | { | |
c1e5786d | 8457 | return __devlink_param_driverinit_value_set(devlink, 0, |
5473a7bd VV |
8458 | &devlink->param_list, |
8459 | param_id, init_val, | |
8460 | DEVLINK_CMD_PARAM_NEW); | |
ec01aeb1 MS |
8461 | } |
8462 | EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_set); | |
8463 | ||
ffd19b9a VV |
8464 | /** |
8465 | * devlink_port_param_driverinit_value_get - get configuration parameter | |
8466 | * value for driver initializing | |
8467 | * | |
8468 | * @devlink_port: devlink_port | |
8469 | * @param_id: parameter ID | |
8470 | * @init_val: value of parameter in driverinit configuration mode | |
8471 | * | |
8472 | * This function should be used by the driver to get driverinit | |
8473 | * configuration for initialization after reload command. | |
8474 | */ | |
8475 | int devlink_port_param_driverinit_value_get(struct devlink_port *devlink_port, | |
8476 | u32 param_id, | |
8477 | union devlink_param_value *init_val) | |
8478 | { | |
8479 | struct devlink *devlink = devlink_port->devlink; | |
8480 | ||
97691069 | 8481 | if (!devlink_reload_supported(devlink)) |
ffd19b9a VV |
8482 | return -EOPNOTSUPP; |
8483 | ||
8484 | return __devlink_param_driverinit_value_get(&devlink_port->param_list, | |
8485 | param_id, init_val); | |
8486 | } | |
8487 | EXPORT_SYMBOL_GPL(devlink_port_param_driverinit_value_get); | |
8488 | ||
5473a7bd VV |
8489 | /** |
8490 | * devlink_port_param_driverinit_value_set - set value of configuration | |
8491 | * parameter for driverinit | |
8492 | * configuration mode | |
8493 | * | |
8494 | * @devlink_port: devlink_port | |
8495 | * @param_id: parameter ID | |
8496 | * @init_val: value of parameter to set for driverinit configuration mode | |
8497 | * | |
8498 | * This function should be used by the driver to set driverinit | |
8499 | * configuration mode default value. | |
8500 | */ | |
8501 | int devlink_port_param_driverinit_value_set(struct devlink_port *devlink_port, | |
8502 | u32 param_id, | |
8503 | union devlink_param_value init_val) | |
8504 | { | |
8505 | return __devlink_param_driverinit_value_set(devlink_port->devlink, | |
c1e5786d | 8506 | devlink_port->index, |
5473a7bd | 8507 | &devlink_port->param_list, |
c1e5786d VV |
8508 | param_id, init_val, |
8509 | DEVLINK_CMD_PORT_PARAM_NEW); | |
5473a7bd VV |
8510 | } |
8511 | EXPORT_SYMBOL_GPL(devlink_port_param_driverinit_value_set); | |
8512 | ||
ea601e17 MS |
8513 | /** |
8514 | * devlink_param_value_changed - notify devlink on a parameter's value | |
8515 | * change. Should be called by the driver | |
8516 | * right after the change. | |
8517 | * | |
8518 | * @devlink: devlink | |
8519 | * @param_id: parameter ID | |
8520 | * | |
8521 | * This function should be used by the driver to notify devlink on value | |
8522 | * change, excluding driverinit configuration mode. | |
8523 | * For driverinit configuration mode driver should use the function | |
ea601e17 MS |
8524 | */ |
8525 | void devlink_param_value_changed(struct devlink *devlink, u32 param_id) | |
8526 | { | |
8527 | struct devlink_param_item *param_item; | |
8528 | ||
8529 | param_item = devlink_param_find_by_id(&devlink->param_list, param_id); | |
8530 | WARN_ON(!param_item); | |
8531 | ||
c1e5786d | 8532 | devlink_param_notify(devlink, 0, param_item, DEVLINK_CMD_PARAM_NEW); |
ea601e17 MS |
8533 | } |
8534 | EXPORT_SYMBOL_GPL(devlink_param_value_changed); | |
8535 | ||
c1e5786d VV |
8536 | /** |
8537 | * devlink_port_param_value_changed - notify devlink on a parameter's value | |
8538 | * change. Should be called by the driver | |
8539 | * right after the change. | |
8540 | * | |
8541 | * @devlink_port: devlink_port | |
8542 | * @param_id: parameter ID | |
8543 | * | |
8544 | * This function should be used by the driver to notify devlink on value | |
8545 | * change, excluding driverinit configuration mode. | |
8546 | * For driverinit configuration mode driver should use the function | |
8547 | * devlink_port_param_driverinit_value_set() instead. | |
8548 | */ | |
8549 | void devlink_port_param_value_changed(struct devlink_port *devlink_port, | |
8550 | u32 param_id) | |
8551 | { | |
8552 | struct devlink_param_item *param_item; | |
8553 | ||
8554 | param_item = devlink_param_find_by_id(&devlink_port->param_list, | |
8555 | param_id); | |
8556 | WARN_ON(!param_item); | |
8557 | ||
8558 | devlink_param_notify(devlink_port->devlink, devlink_port->index, | |
8559 | param_item, DEVLINK_CMD_PORT_PARAM_NEW); | |
8560 | } | |
8561 | EXPORT_SYMBOL_GPL(devlink_port_param_value_changed); | |
8562 | ||
bde74ad1 MS |
8563 | /** |
8564 | * devlink_param_value_str_fill - Safely fill-up the string preventing | |
8565 | * from overflow of the preallocated buffer | |
8566 | * | |
8567 | * @dst_val: destination devlink_param_value | |
8568 | * @src: source buffer | |
8569 | */ | |
8570 | void devlink_param_value_str_fill(union devlink_param_value *dst_val, | |
8571 | const char *src) | |
8572 | { | |
8573 | size_t len; | |
8574 | ||
8575 | len = strlcpy(dst_val->vstr, src, __DEVLINK_PARAM_MAX_STRING_VALUE); | |
8576 | WARN_ON(len >= __DEVLINK_PARAM_MAX_STRING_VALUE); | |
8577 | } | |
8578 | EXPORT_SYMBOL_GPL(devlink_param_value_str_fill); | |
8579 | ||
b16ebe92 AV |
8580 | /** |
8581 | * devlink_region_create - create a new address region | |
8582 | * | |
8583 | * @devlink: devlink | |
e8937681 | 8584 | * @ops: region operations and name |
b16ebe92 AV |
8585 | * @region_max_snapshots: Maximum supported number of snapshots for region |
8586 | * @region_size: size of region | |
8587 | */ | |
e8937681 JK |
8588 | struct devlink_region * |
8589 | devlink_region_create(struct devlink *devlink, | |
8590 | const struct devlink_region_ops *ops, | |
8591 | u32 region_max_snapshots, u64 region_size) | |
b16ebe92 AV |
8592 | { |
8593 | struct devlink_region *region; | |
8594 | int err = 0; | |
8595 | ||
a0a09f6b JK |
8596 | if (WARN_ON(!ops) || WARN_ON(!ops->destructor)) |
8597 | return ERR_PTR(-EINVAL); | |
8598 | ||
b16ebe92 AV |
8599 | mutex_lock(&devlink->lock); |
8600 | ||
e8937681 | 8601 | if (devlink_region_get_by_name(devlink, ops->name)) { |
b16ebe92 AV |
8602 | err = -EEXIST; |
8603 | goto unlock; | |
8604 | } | |
8605 | ||
8606 | region = kzalloc(sizeof(*region), GFP_KERNEL); | |
8607 | if (!region) { | |
8608 | err = -ENOMEM; | |
8609 | goto unlock; | |
8610 | } | |
8611 | ||
8612 | region->devlink = devlink; | |
8613 | region->max_snapshots = region_max_snapshots; | |
e8937681 | 8614 | region->ops = ops; |
b16ebe92 AV |
8615 | region->size = region_size; |
8616 | INIT_LIST_HEAD(®ion->snapshot_list); | |
8617 | list_add_tail(®ion->list, &devlink->region_list); | |
866319bb | 8618 | devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW); |
b16ebe92 AV |
8619 | |
8620 | mutex_unlock(&devlink->lock); | |
8621 | return region; | |
8622 | ||
8623 | unlock: | |
8624 | mutex_unlock(&devlink->lock); | |
8625 | return ERR_PTR(err); | |
8626 | } | |
8627 | EXPORT_SYMBOL_GPL(devlink_region_create); | |
8628 | ||
8629 | /** | |
8630 | * devlink_region_destroy - destroy address region | |
8631 | * | |
8632 | * @region: devlink region to destroy | |
8633 | */ | |
8634 | void devlink_region_destroy(struct devlink_region *region) | |
8635 | { | |
8636 | struct devlink *devlink = region->devlink; | |
d7e52722 | 8637 | struct devlink_snapshot *snapshot, *ts; |
b16ebe92 AV |
8638 | |
8639 | mutex_lock(&devlink->lock); | |
d7e52722 AV |
8640 | |
8641 | /* Free all snapshots of region */ | |
8642 | list_for_each_entry_safe(snapshot, ts, ®ion->snapshot_list, list) | |
92b49822 | 8643 | devlink_region_snapshot_del(region, snapshot); |
d7e52722 | 8644 | |
b16ebe92 | 8645 | list_del(®ion->list); |
866319bb AV |
8646 | |
8647 | devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_DEL); | |
b16ebe92 AV |
8648 | mutex_unlock(&devlink->lock); |
8649 | kfree(region); | |
8650 | } | |
8651 | EXPORT_SYMBOL_GPL(devlink_region_destroy); | |
8652 | ||
ccadfa44 | 8653 | /** |
b0efcae5 | 8654 | * devlink_region_snapshot_id_get - get snapshot ID |
ccadfa44 AV |
8655 | * |
8656 | * This callback should be called when adding a new snapshot, | |
8657 | * Driver should use the same id for multiple snapshots taken | |
8658 | * on multiple regions at the same time/by the same trigger. | |
8659 | * | |
12102436 JK |
8660 | * The caller of this function must use devlink_region_snapshot_id_put |
8661 | * when finished creating regions using this id. | |
8662 | * | |
7ef19d3b JK |
8663 | * Returns zero on success, or a negative error code on failure. |
8664 | * | |
ccadfa44 | 8665 | * @devlink: devlink |
7ef19d3b | 8666 | * @id: storage to return id |
ccadfa44 | 8667 | */ |
7ef19d3b | 8668 | int devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id) |
ccadfa44 | 8669 | { |
7ef19d3b | 8670 | int err; |
ccadfa44 AV |
8671 | |
8672 | mutex_lock(&devlink->lock); | |
7ef19d3b | 8673 | err = __devlink_region_snapshot_id_get(devlink, id); |
ccadfa44 AV |
8674 | mutex_unlock(&devlink->lock); |
8675 | ||
7ef19d3b | 8676 | return err; |
ccadfa44 | 8677 | } |
b0efcae5 | 8678 | EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_get); |
ccadfa44 | 8679 | |
12102436 JK |
8680 | /** |
8681 | * devlink_region_snapshot_id_put - put snapshot ID reference | |
8682 | * | |
8683 | * This should be called by a driver after finishing creating snapshots | |
8684 | * with an id. Doing so ensures that the ID can later be released in the | |
8685 | * event that all snapshots using it have been destroyed. | |
8686 | * | |
8687 | * @devlink: devlink | |
8688 | * @id: id to release reference on | |
8689 | */ | |
8690 | void devlink_region_snapshot_id_put(struct devlink *devlink, u32 id) | |
8691 | { | |
8692 | mutex_lock(&devlink->lock); | |
8693 | __devlink_snapshot_id_decrement(devlink, id); | |
8694 | mutex_unlock(&devlink->lock); | |
8695 | } | |
8696 | EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_put); | |
8697 | ||
d7e52722 AV |
8698 | /** |
8699 | * devlink_region_snapshot_create - create a new snapshot | |
8700 | * This will add a new snapshot of a region. The snapshot | |
8701 | * will be stored on the region struct and can be accessed | |
6d82f67e | 8702 | * from devlink. This is useful for future analyses of snapshots. |
d7e52722 AV |
8703 | * Multiple snapshots can be created on a region. |
8704 | * The @snapshot_id should be obtained using the getter function. | |
8705 | * | |
eeaadd82 | 8706 | * @region: devlink region of the snapshot |
d7e52722 AV |
8707 | * @data: snapshot data |
8708 | * @snapshot_id: snapshot id to be created | |
d7e52722 | 8709 | */ |
3a5e5234 | 8710 | int devlink_region_snapshot_create(struct devlink_region *region, |
a0a09f6b | 8711 | u8 *data, u32 snapshot_id) |
d7e52722 AV |
8712 | { |
8713 | struct devlink *devlink = region->devlink; | |
d7e52722 AV |
8714 | int err; |
8715 | ||
8716 | mutex_lock(&devlink->lock); | |
cf80faee | 8717 | err = __devlink_region_snapshot_create(region, data, snapshot_id); |
d7e52722 | 8718 | mutex_unlock(&devlink->lock); |
d7e52722 | 8719 | |
d7e52722 AV |
8720 | return err; |
8721 | } | |
8722 | EXPORT_SYMBOL_GPL(devlink_region_snapshot_create); | |
8723 | ||
0f420b6c IS |
8724 | #define DEVLINK_TRAP(_id, _type) \ |
8725 | { \ | |
8726 | .type = DEVLINK_TRAP_TYPE_##_type, \ | |
8727 | .id = DEVLINK_TRAP_GENERIC_ID_##_id, \ | |
8728 | .name = DEVLINK_TRAP_GENERIC_NAME_##_id, \ | |
8729 | } | |
8730 | ||
8731 | static const struct devlink_trap devlink_trap_generic[] = { | |
391203ab IS |
8732 | DEVLINK_TRAP(SMAC_MC, DROP), |
8733 | DEVLINK_TRAP(VLAN_TAG_MISMATCH, DROP), | |
8734 | DEVLINK_TRAP(INGRESS_VLAN_FILTER, DROP), | |
8735 | DEVLINK_TRAP(INGRESS_STP_FILTER, DROP), | |
8736 | DEVLINK_TRAP(EMPTY_TX_LIST, DROP), | |
8737 | DEVLINK_TRAP(PORT_LOOPBACK_FILTER, DROP), | |
8738 | DEVLINK_TRAP(BLACKHOLE_ROUTE, DROP), | |
8739 | DEVLINK_TRAP(TTL_ERROR, EXCEPTION), | |
8740 | DEVLINK_TRAP(TAIL_DROP, DROP), | |
6896cc4d AC |
8741 | DEVLINK_TRAP(NON_IP_PACKET, DROP), |
8742 | DEVLINK_TRAP(UC_DIP_MC_DMAC, DROP), | |
8743 | DEVLINK_TRAP(DIP_LB, DROP), | |
8744 | DEVLINK_TRAP(SIP_MC, DROP), | |
8745 | DEVLINK_TRAP(SIP_LB, DROP), | |
8746 | DEVLINK_TRAP(CORRUPTED_IP_HDR, DROP), | |
8747 | DEVLINK_TRAP(IPV4_SIP_BC, DROP), | |
8748 | DEVLINK_TRAP(IPV6_MC_DIP_RESERVED_SCOPE, DROP), | |
8749 | DEVLINK_TRAP(IPV6_MC_DIP_INTERFACE_LOCAL_SCOPE, DROP), | |
3b063ae5 AC |
8750 | DEVLINK_TRAP(MTU_ERROR, EXCEPTION), |
8751 | DEVLINK_TRAP(UNRESOLVED_NEIGH, EXCEPTION), | |
8752 | DEVLINK_TRAP(RPF, EXCEPTION), | |
8753 | DEVLINK_TRAP(REJECT_ROUTE, EXCEPTION), | |
8754 | DEVLINK_TRAP(IPV4_LPM_UNICAST_MISS, EXCEPTION), | |
8755 | DEVLINK_TRAP(IPV6_LPM_UNICAST_MISS, EXCEPTION), | |
95f0ead8 | 8756 | DEVLINK_TRAP(NON_ROUTABLE, DROP), |
13c056ec | 8757 | DEVLINK_TRAP(DECAP_ERROR, EXCEPTION), |
c3cae491 | 8758 | DEVLINK_TRAP(OVERLAY_SMAC_MC, DROP), |
ecd942a0 JP |
8759 | DEVLINK_TRAP(INGRESS_FLOW_ACTION_DROP, DROP), |
8760 | DEVLINK_TRAP(EGRESS_FLOW_ACTION_DROP, DROP), | |
515eac67 IS |
8761 | DEVLINK_TRAP(STP, CONTROL), |
8762 | DEVLINK_TRAP(LACP, CONTROL), | |
8763 | DEVLINK_TRAP(LLDP, CONTROL), | |
8764 | DEVLINK_TRAP(IGMP_QUERY, CONTROL), | |
8765 | DEVLINK_TRAP(IGMP_V1_REPORT, CONTROL), | |
8766 | DEVLINK_TRAP(IGMP_V2_REPORT, CONTROL), | |
8767 | DEVLINK_TRAP(IGMP_V3_REPORT, CONTROL), | |
8768 | DEVLINK_TRAP(IGMP_V2_LEAVE, CONTROL), | |
8769 | DEVLINK_TRAP(MLD_QUERY, CONTROL), | |
8770 | DEVLINK_TRAP(MLD_V1_REPORT, CONTROL), | |
8771 | DEVLINK_TRAP(MLD_V2_REPORT, CONTROL), | |
8772 | DEVLINK_TRAP(MLD_V1_DONE, CONTROL), | |
d77cfd16 IS |
8773 | DEVLINK_TRAP(IPV4_DHCP, CONTROL), |
8774 | DEVLINK_TRAP(IPV6_DHCP, CONTROL), | |
8775 | DEVLINK_TRAP(ARP_REQUEST, CONTROL), | |
8776 | DEVLINK_TRAP(ARP_RESPONSE, CONTROL), | |
8777 | DEVLINK_TRAP(ARP_OVERLAY, CONTROL), | |
8778 | DEVLINK_TRAP(IPV6_NEIGH_SOLICIT, CONTROL), | |
8779 | DEVLINK_TRAP(IPV6_NEIGH_ADVERT, CONTROL), | |
8780 | DEVLINK_TRAP(IPV4_BFD, CONTROL), | |
8781 | DEVLINK_TRAP(IPV6_BFD, CONTROL), | |
8782 | DEVLINK_TRAP(IPV4_OSPF, CONTROL), | |
8783 | DEVLINK_TRAP(IPV6_OSPF, CONTROL), | |
8784 | DEVLINK_TRAP(IPV4_BGP, CONTROL), | |
8785 | DEVLINK_TRAP(IPV6_BGP, CONTROL), | |
8786 | DEVLINK_TRAP(IPV4_VRRP, CONTROL), | |
8787 | DEVLINK_TRAP(IPV6_VRRP, CONTROL), | |
8788 | DEVLINK_TRAP(IPV4_PIM, CONTROL), | |
8789 | DEVLINK_TRAP(IPV6_PIM, CONTROL), | |
8790 | DEVLINK_TRAP(UC_LB, CONTROL), | |
8791 | DEVLINK_TRAP(LOCAL_ROUTE, CONTROL), | |
8792 | DEVLINK_TRAP(EXTERNAL_ROUTE, CONTROL), | |
8793 | DEVLINK_TRAP(IPV6_UC_DIP_LINK_LOCAL_SCOPE, CONTROL), | |
8794 | DEVLINK_TRAP(IPV6_DIP_ALL_NODES, CONTROL), | |
8795 | DEVLINK_TRAP(IPV6_DIP_ALL_ROUTERS, CONTROL), | |
8796 | DEVLINK_TRAP(IPV6_ROUTER_SOLICIT, CONTROL), | |
8797 | DEVLINK_TRAP(IPV6_ROUTER_ADVERT, CONTROL), | |
8798 | DEVLINK_TRAP(IPV6_REDIRECT, CONTROL), | |
8799 | DEVLINK_TRAP(IPV4_ROUTER_ALERT, CONTROL), | |
8800 | DEVLINK_TRAP(IPV6_ROUTER_ALERT, CONTROL), | |
8801 | DEVLINK_TRAP(PTP_EVENT, CONTROL), | |
8802 | DEVLINK_TRAP(PTP_GENERAL, CONTROL), | |
5eb18a2b IS |
8803 | DEVLINK_TRAP(FLOW_ACTION_SAMPLE, CONTROL), |
8804 | DEVLINK_TRAP(FLOW_ACTION_TRAP, CONTROL), | |
08e335f6 | 8805 | DEVLINK_TRAP(EARLY_DROP, DROP), |
0f420b6c IS |
8806 | }; |
8807 | ||
8808 | #define DEVLINK_TRAP_GROUP(_id) \ | |
8809 | { \ | |
8810 | .id = DEVLINK_TRAP_GROUP_GENERIC_ID_##_id, \ | |
8811 | .name = DEVLINK_TRAP_GROUP_GENERIC_NAME_##_id, \ | |
8812 | } | |
8813 | ||
8814 | static const struct devlink_trap_group devlink_trap_group_generic[] = { | |
391203ab IS |
8815 | DEVLINK_TRAP_GROUP(L2_DROPS), |
8816 | DEVLINK_TRAP_GROUP(L3_DROPS), | |
678eb199 | 8817 | DEVLINK_TRAP_GROUP(L3_EXCEPTIONS), |
391203ab | 8818 | DEVLINK_TRAP_GROUP(BUFFER_DROPS), |
13c056ec | 8819 | DEVLINK_TRAP_GROUP(TUNNEL_DROPS), |
ecd942a0 | 8820 | DEVLINK_TRAP_GROUP(ACL_DROPS), |
515eac67 IS |
8821 | DEVLINK_TRAP_GROUP(STP), |
8822 | DEVLINK_TRAP_GROUP(LACP), | |
8823 | DEVLINK_TRAP_GROUP(LLDP), | |
8824 | DEVLINK_TRAP_GROUP(MC_SNOOPING), | |
d77cfd16 IS |
8825 | DEVLINK_TRAP_GROUP(DHCP), |
8826 | DEVLINK_TRAP_GROUP(NEIGH_DISCOVERY), | |
8827 | DEVLINK_TRAP_GROUP(BFD), | |
8828 | DEVLINK_TRAP_GROUP(OSPF), | |
8829 | DEVLINK_TRAP_GROUP(BGP), | |
8830 | DEVLINK_TRAP_GROUP(VRRP), | |
8831 | DEVLINK_TRAP_GROUP(PIM), | |
8832 | DEVLINK_TRAP_GROUP(UC_LB), | |
8833 | DEVLINK_TRAP_GROUP(LOCAL_DELIVERY), | |
ec4f5b36 | 8834 | DEVLINK_TRAP_GROUP(EXTERNAL_DELIVERY), |
d77cfd16 IS |
8835 | DEVLINK_TRAP_GROUP(IPV6), |
8836 | DEVLINK_TRAP_GROUP(PTP_EVENT), | |
8837 | DEVLINK_TRAP_GROUP(PTP_GENERAL), | |
5eb18a2b IS |
8838 | DEVLINK_TRAP_GROUP(ACL_SAMPLE), |
8839 | DEVLINK_TRAP_GROUP(ACL_TRAP), | |
0f420b6c IS |
8840 | }; |
8841 | ||
8842 | static int devlink_trap_generic_verify(const struct devlink_trap *trap) | |
8843 | { | |
8844 | if (trap->id > DEVLINK_TRAP_GENERIC_ID_MAX) | |
8845 | return -EINVAL; | |
8846 | ||
8847 | if (strcmp(trap->name, devlink_trap_generic[trap->id].name)) | |
8848 | return -EINVAL; | |
8849 | ||
8850 | if (trap->type != devlink_trap_generic[trap->id].type) | |
8851 | return -EINVAL; | |
8852 | ||
8853 | return 0; | |
8854 | } | |
8855 | ||
8856 | static int devlink_trap_driver_verify(const struct devlink_trap *trap) | |
8857 | { | |
8858 | int i; | |
8859 | ||
8860 | if (trap->id <= DEVLINK_TRAP_GENERIC_ID_MAX) | |
8861 | return -EINVAL; | |
8862 | ||
8863 | for (i = 0; i < ARRAY_SIZE(devlink_trap_generic); i++) { | |
8864 | if (!strcmp(trap->name, devlink_trap_generic[i].name)) | |
8865 | return -EEXIST; | |
8866 | } | |
8867 | ||
8868 | return 0; | |
8869 | } | |
8870 | ||
8871 | static int devlink_trap_verify(const struct devlink_trap *trap) | |
8872 | { | |
107f1678 | 8873 | if (!trap || !trap->name) |
0f420b6c IS |
8874 | return -EINVAL; |
8875 | ||
8876 | if (trap->generic) | |
8877 | return devlink_trap_generic_verify(trap); | |
8878 | else | |
8879 | return devlink_trap_driver_verify(trap); | |
8880 | } | |
8881 | ||
8882 | static int | |
8883 | devlink_trap_group_generic_verify(const struct devlink_trap_group *group) | |
8884 | { | |
8885 | if (group->id > DEVLINK_TRAP_GROUP_GENERIC_ID_MAX) | |
8886 | return -EINVAL; | |
8887 | ||
8888 | if (strcmp(group->name, devlink_trap_group_generic[group->id].name)) | |
8889 | return -EINVAL; | |
8890 | ||
8891 | return 0; | |
8892 | } | |
8893 | ||
8894 | static int | |
8895 | devlink_trap_group_driver_verify(const struct devlink_trap_group *group) | |
8896 | { | |
8897 | int i; | |
8898 | ||
8899 | if (group->id <= DEVLINK_TRAP_GROUP_GENERIC_ID_MAX) | |
8900 | return -EINVAL; | |
8901 | ||
8902 | for (i = 0; i < ARRAY_SIZE(devlink_trap_group_generic); i++) { | |
8903 | if (!strcmp(group->name, devlink_trap_group_generic[i].name)) | |
8904 | return -EEXIST; | |
8905 | } | |
8906 | ||
8907 | return 0; | |
8908 | } | |
8909 | ||
8910 | static int devlink_trap_group_verify(const struct devlink_trap_group *group) | |
8911 | { | |
8912 | if (group->generic) | |
8913 | return devlink_trap_group_generic_verify(group); | |
8914 | else | |
8915 | return devlink_trap_group_driver_verify(group); | |
8916 | } | |
8917 | ||
8918 | static void | |
8919 | devlink_trap_group_notify(struct devlink *devlink, | |
8920 | const struct devlink_trap_group_item *group_item, | |
8921 | enum devlink_command cmd) | |
8922 | { | |
8923 | struct sk_buff *msg; | |
8924 | int err; | |
8925 | ||
8926 | WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_GROUP_NEW && | |
8927 | cmd != DEVLINK_CMD_TRAP_GROUP_DEL); | |
8928 | ||
8929 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
8930 | if (!msg) | |
8931 | return; | |
8932 | ||
8933 | err = devlink_nl_trap_group_fill(msg, devlink, group_item, cmd, 0, 0, | |
8934 | 0); | |
8935 | if (err) { | |
8936 | nlmsg_free(msg); | |
8937 | return; | |
8938 | } | |
8939 | ||
8940 | genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), | |
8941 | msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL); | |
8942 | } | |
8943 | ||
0f420b6c IS |
8944 | static int |
8945 | devlink_trap_item_group_link(struct devlink *devlink, | |
8946 | struct devlink_trap_item *trap_item) | |
8947 | { | |
107f1678 | 8948 | u16 group_id = trap_item->trap->init_group_id; |
0f420b6c IS |
8949 | struct devlink_trap_group_item *group_item; |
8950 | ||
107f1678 | 8951 | group_item = devlink_trap_group_item_lookup_by_id(devlink, group_id); |
a09b37fc IS |
8952 | if (WARN_ON_ONCE(!group_item)) |
8953 | return -EINVAL; | |
0f420b6c IS |
8954 | |
8955 | trap_item->group_item = group_item; | |
8956 | ||
8957 | return 0; | |
8958 | } | |
8959 | ||
0f420b6c IS |
8960 | static void devlink_trap_notify(struct devlink *devlink, |
8961 | const struct devlink_trap_item *trap_item, | |
8962 | enum devlink_command cmd) | |
8963 | { | |
8964 | struct sk_buff *msg; | |
8965 | int err; | |
8966 | ||
8967 | WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_NEW && | |
8968 | cmd != DEVLINK_CMD_TRAP_DEL); | |
8969 | ||
8970 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
8971 | if (!msg) | |
8972 | return; | |
8973 | ||
8974 | err = devlink_nl_trap_fill(msg, devlink, trap_item, cmd, 0, 0, 0); | |
8975 | if (err) { | |
8976 | nlmsg_free(msg); | |
8977 | return; | |
8978 | } | |
8979 | ||
8980 | genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), | |
8981 | msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL); | |
8982 | } | |
8983 | ||
8984 | static int | |
8985 | devlink_trap_register(struct devlink *devlink, | |
8986 | const struct devlink_trap *trap, void *priv) | |
8987 | { | |
8988 | struct devlink_trap_item *trap_item; | |
8989 | int err; | |
8990 | ||
8991 | if (devlink_trap_item_lookup(devlink, trap->name)) | |
8992 | return -EEXIST; | |
8993 | ||
8994 | trap_item = kzalloc(sizeof(*trap_item), GFP_KERNEL); | |
8995 | if (!trap_item) | |
8996 | return -ENOMEM; | |
8997 | ||
8998 | trap_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats); | |
8999 | if (!trap_item->stats) { | |
9000 | err = -ENOMEM; | |
9001 | goto err_stats_alloc; | |
9002 | } | |
9003 | ||
9004 | trap_item->trap = trap; | |
9005 | trap_item->action = trap->init_action; | |
9006 | trap_item->priv = priv; | |
9007 | ||
9008 | err = devlink_trap_item_group_link(devlink, trap_item); | |
9009 | if (err) | |
9010 | goto err_group_link; | |
9011 | ||
9012 | err = devlink->ops->trap_init(devlink, trap, trap_item); | |
9013 | if (err) | |
9014 | goto err_trap_init; | |
9015 | ||
9016 | list_add_tail(&trap_item->list, &devlink->trap_list); | |
9017 | devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_NEW); | |
9018 | ||
9019 | return 0; | |
9020 | ||
9021 | err_trap_init: | |
0f420b6c IS |
9022 | err_group_link: |
9023 | free_percpu(trap_item->stats); | |
9024 | err_stats_alloc: | |
9025 | kfree(trap_item); | |
9026 | return err; | |
9027 | } | |
9028 | ||
9029 | static void devlink_trap_unregister(struct devlink *devlink, | |
9030 | const struct devlink_trap *trap) | |
9031 | { | |
9032 | struct devlink_trap_item *trap_item; | |
9033 | ||
9034 | trap_item = devlink_trap_item_lookup(devlink, trap->name); | |
9035 | if (WARN_ON_ONCE(!trap_item)) | |
9036 | return; | |
9037 | ||
9038 | devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_DEL); | |
9039 | list_del(&trap_item->list); | |
9040 | if (devlink->ops->trap_fini) | |
9041 | devlink->ops->trap_fini(devlink, trap, trap_item); | |
0f420b6c IS |
9042 | free_percpu(trap_item->stats); |
9043 | kfree(trap_item); | |
9044 | } | |
9045 | ||
9046 | static void devlink_trap_disable(struct devlink *devlink, | |
9047 | const struct devlink_trap *trap) | |
9048 | { | |
9049 | struct devlink_trap_item *trap_item; | |
9050 | ||
9051 | trap_item = devlink_trap_item_lookup(devlink, trap->name); | |
9052 | if (WARN_ON_ONCE(!trap_item)) | |
9053 | return; | |
9054 | ||
c88e11e0 IS |
9055 | devlink->ops->trap_action_set(devlink, trap, DEVLINK_TRAP_ACTION_DROP, |
9056 | NULL); | |
0f420b6c IS |
9057 | trap_item->action = DEVLINK_TRAP_ACTION_DROP; |
9058 | } | |
9059 | ||
9060 | /** | |
9061 | * devlink_traps_register - Register packet traps with devlink. | |
9062 | * @devlink: devlink. | |
9063 | * @traps: Packet traps. | |
9064 | * @traps_count: Count of provided packet traps. | |
9065 | * @priv: Driver private information. | |
9066 | * | |
9067 | * Return: Non-zero value on failure. | |
9068 | */ | |
9069 | int devlink_traps_register(struct devlink *devlink, | |
9070 | const struct devlink_trap *traps, | |
9071 | size_t traps_count, void *priv) | |
9072 | { | |
9073 | int i, err; | |
9074 | ||
9075 | if (!devlink->ops->trap_init || !devlink->ops->trap_action_set) | |
9076 | return -EINVAL; | |
9077 | ||
9078 | mutex_lock(&devlink->lock); | |
9079 | for (i = 0; i < traps_count; i++) { | |
9080 | const struct devlink_trap *trap = &traps[i]; | |
9081 | ||
9082 | err = devlink_trap_verify(trap); | |
9083 | if (err) | |
9084 | goto err_trap_verify; | |
9085 | ||
9086 | err = devlink_trap_register(devlink, trap, priv); | |
9087 | if (err) | |
9088 | goto err_trap_register; | |
9089 | } | |
9090 | mutex_unlock(&devlink->lock); | |
9091 | ||
9092 | return 0; | |
9093 | ||
9094 | err_trap_register: | |
9095 | err_trap_verify: | |
9096 | for (i--; i >= 0; i--) | |
9097 | devlink_trap_unregister(devlink, &traps[i]); | |
9098 | mutex_unlock(&devlink->lock); | |
9099 | return err; | |
9100 | } | |
9101 | EXPORT_SYMBOL_GPL(devlink_traps_register); | |
9102 | ||
9103 | /** | |
9104 | * devlink_traps_unregister - Unregister packet traps from devlink. | |
9105 | * @devlink: devlink. | |
9106 | * @traps: Packet traps. | |
9107 | * @traps_count: Count of provided packet traps. | |
9108 | */ | |
9109 | void devlink_traps_unregister(struct devlink *devlink, | |
9110 | const struct devlink_trap *traps, | |
9111 | size_t traps_count) | |
9112 | { | |
9113 | int i; | |
9114 | ||
9115 | mutex_lock(&devlink->lock); | |
9116 | /* Make sure we do not have any packets in-flight while unregistering | |
9117 | * traps by disabling all of them and waiting for a grace period. | |
9118 | */ | |
9119 | for (i = traps_count - 1; i >= 0; i--) | |
9120 | devlink_trap_disable(devlink, &traps[i]); | |
9121 | synchronize_rcu(); | |
9122 | for (i = traps_count - 1; i >= 0; i--) | |
9123 | devlink_trap_unregister(devlink, &traps[i]); | |
9124 | mutex_unlock(&devlink->lock); | |
9125 | } | |
9126 | EXPORT_SYMBOL_GPL(devlink_traps_unregister); | |
9127 | ||
9128 | static void | |
9129 | devlink_trap_stats_update(struct devlink_stats __percpu *trap_stats, | |
9130 | size_t skb_len) | |
9131 | { | |
9132 | struct devlink_stats *stats; | |
9133 | ||
9134 | stats = this_cpu_ptr(trap_stats); | |
9135 | u64_stats_update_begin(&stats->syncp); | |
9136 | stats->rx_bytes += skb_len; | |
9137 | stats->rx_packets++; | |
9138 | u64_stats_update_end(&stats->syncp); | |
9139 | } | |
9140 | ||
9141 | static void | |
9142 | devlink_trap_report_metadata_fill(struct net_dm_hw_metadata *hw_metadata, | |
9143 | const struct devlink_trap_item *trap_item, | |
5a2e106c JP |
9144 | struct devlink_port *in_devlink_port, |
9145 | const struct flow_action_cookie *fa_cookie) | |
0f420b6c IS |
9146 | { |
9147 | struct devlink_trap_group_item *group_item = trap_item->group_item; | |
9148 | ||
9149 | hw_metadata->trap_group_name = group_item->group->name; | |
9150 | hw_metadata->trap_name = trap_item->trap->name; | |
5a2e106c | 9151 | hw_metadata->fa_cookie = fa_cookie; |
0f420b6c IS |
9152 | |
9153 | spin_lock(&in_devlink_port->type_lock); | |
9154 | if (in_devlink_port->type == DEVLINK_PORT_TYPE_ETH) | |
9155 | hw_metadata->input_dev = in_devlink_port->type_dev; | |
9156 | spin_unlock(&in_devlink_port->type_lock); | |
9157 | } | |
9158 | ||
9159 | /** | |
9160 | * devlink_trap_report - Report trapped packet to drop monitor. | |
9161 | * @devlink: devlink. | |
9162 | * @skb: Trapped packet. | |
9163 | * @trap_ctx: Trap context. | |
9164 | * @in_devlink_port: Input devlink port. | |
5a2e106c | 9165 | * @fa_cookie: Flow action cookie. Could be NULL. |
0f420b6c IS |
9166 | */ |
9167 | void devlink_trap_report(struct devlink *devlink, struct sk_buff *skb, | |
5a2e106c JP |
9168 | void *trap_ctx, struct devlink_port *in_devlink_port, |
9169 | const struct flow_action_cookie *fa_cookie) | |
9170 | ||
0f420b6c IS |
9171 | { |
9172 | struct devlink_trap_item *trap_item = trap_ctx; | |
9173 | struct net_dm_hw_metadata hw_metadata = {}; | |
9174 | ||
9175 | devlink_trap_stats_update(trap_item->stats, skb->len); | |
9176 | devlink_trap_stats_update(trap_item->group_item->stats, skb->len); | |
9177 | ||
30a4e9a2 IS |
9178 | /* Control packets were not dropped by the device or encountered an |
9179 | * exception during forwarding and therefore should not be reported to | |
9180 | * the kernel's drop monitor. | |
9181 | */ | |
9182 | if (trap_item->trap->type == DEVLINK_TRAP_TYPE_CONTROL) | |
9183 | return; | |
9184 | ||
0f420b6c | 9185 | devlink_trap_report_metadata_fill(&hw_metadata, trap_item, |
5a2e106c | 9186 | in_devlink_port, fa_cookie); |
0f420b6c IS |
9187 | net_dm_hw_report(skb, &hw_metadata); |
9188 | } | |
9189 | EXPORT_SYMBOL_GPL(devlink_trap_report); | |
9190 | ||
9191 | /** | |
9192 | * devlink_trap_ctx_priv - Trap context to driver private information. | |
9193 | * @trap_ctx: Trap context. | |
9194 | * | |
9195 | * Return: Driver private information passed during registration. | |
9196 | */ | |
9197 | void *devlink_trap_ctx_priv(void *trap_ctx) | |
9198 | { | |
9199 | struct devlink_trap_item *trap_item = trap_ctx; | |
9200 | ||
9201 | return trap_item->priv; | |
9202 | } | |
9203 | EXPORT_SYMBOL_GPL(devlink_trap_ctx_priv); | |
9204 | ||
f9f54392 IS |
9205 | static int |
9206 | devlink_trap_group_item_policer_link(struct devlink *devlink, | |
9207 | struct devlink_trap_group_item *group_item) | |
9208 | { | |
9209 | u32 policer_id = group_item->group->init_policer_id; | |
9210 | struct devlink_trap_policer_item *policer_item; | |
9211 | ||
9212 | if (policer_id == 0) | |
9213 | return 0; | |
9214 | ||
9215 | policer_item = devlink_trap_policer_item_lookup(devlink, policer_id); | |
9216 | if (WARN_ON_ONCE(!policer_item)) | |
9217 | return -EINVAL; | |
9218 | ||
9219 | group_item->policer_item = policer_item; | |
9220 | ||
9221 | return 0; | |
9222 | } | |
9223 | ||
95ad9555 IS |
9224 | static int |
9225 | devlink_trap_group_register(struct devlink *devlink, | |
9226 | const struct devlink_trap_group *group) | |
9227 | { | |
9228 | struct devlink_trap_group_item *group_item; | |
9229 | int err; | |
9230 | ||
9231 | if (devlink_trap_group_item_lookup(devlink, group->name)) | |
9232 | return -EEXIST; | |
9233 | ||
9234 | group_item = kzalloc(sizeof(*group_item), GFP_KERNEL); | |
9235 | if (!group_item) | |
9236 | return -ENOMEM; | |
9237 | ||
9238 | group_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats); | |
9239 | if (!group_item->stats) { | |
9240 | err = -ENOMEM; | |
9241 | goto err_stats_alloc; | |
9242 | } | |
9243 | ||
9244 | group_item->group = group; | |
95ad9555 | 9245 | |
f9f54392 IS |
9246 | err = devlink_trap_group_item_policer_link(devlink, group_item); |
9247 | if (err) | |
9248 | goto err_policer_link; | |
9249 | ||
95ad9555 IS |
9250 | if (devlink->ops->trap_group_init) { |
9251 | err = devlink->ops->trap_group_init(devlink, group); | |
9252 | if (err) | |
9253 | goto err_group_init; | |
9254 | } | |
9255 | ||
9256 | list_add_tail(&group_item->list, &devlink->trap_group_list); | |
9257 | devlink_trap_group_notify(devlink, group_item, | |
9258 | DEVLINK_CMD_TRAP_GROUP_NEW); | |
9259 | ||
9260 | return 0; | |
9261 | ||
9262 | err_group_init: | |
f9f54392 | 9263 | err_policer_link: |
95ad9555 IS |
9264 | free_percpu(group_item->stats); |
9265 | err_stats_alloc: | |
9266 | kfree(group_item); | |
9267 | return err; | |
9268 | } | |
9269 | ||
9270 | static void | |
9271 | devlink_trap_group_unregister(struct devlink *devlink, | |
9272 | const struct devlink_trap_group *group) | |
9273 | { | |
9274 | struct devlink_trap_group_item *group_item; | |
9275 | ||
9276 | group_item = devlink_trap_group_item_lookup(devlink, group->name); | |
9277 | if (WARN_ON_ONCE(!group_item)) | |
9278 | return; | |
9279 | ||
9280 | devlink_trap_group_notify(devlink, group_item, | |
9281 | DEVLINK_CMD_TRAP_GROUP_DEL); | |
9282 | list_del(&group_item->list); | |
9283 | free_percpu(group_item->stats); | |
9284 | kfree(group_item); | |
9285 | } | |
9286 | ||
9287 | /** | |
9288 | * devlink_trap_groups_register - Register packet trap groups with devlink. | |
9289 | * @devlink: devlink. | |
9290 | * @groups: Packet trap groups. | |
9291 | * @groups_count: Count of provided packet trap groups. | |
9292 | * | |
9293 | * Return: Non-zero value on failure. | |
9294 | */ | |
9295 | int devlink_trap_groups_register(struct devlink *devlink, | |
9296 | const struct devlink_trap_group *groups, | |
9297 | size_t groups_count) | |
9298 | { | |
9299 | int i, err; | |
9300 | ||
9301 | mutex_lock(&devlink->lock); | |
9302 | for (i = 0; i < groups_count; i++) { | |
9303 | const struct devlink_trap_group *group = &groups[i]; | |
9304 | ||
9305 | err = devlink_trap_group_verify(group); | |
9306 | if (err) | |
9307 | goto err_trap_group_verify; | |
9308 | ||
9309 | err = devlink_trap_group_register(devlink, group); | |
9310 | if (err) | |
9311 | goto err_trap_group_register; | |
9312 | } | |
9313 | mutex_unlock(&devlink->lock); | |
9314 | ||
9315 | return 0; | |
9316 | ||
9317 | err_trap_group_register: | |
9318 | err_trap_group_verify: | |
9319 | for (i--; i >= 0; i--) | |
9320 | devlink_trap_group_unregister(devlink, &groups[i]); | |
9321 | mutex_unlock(&devlink->lock); | |
9322 | return err; | |
9323 | } | |
9324 | EXPORT_SYMBOL_GPL(devlink_trap_groups_register); | |
9325 | ||
9326 | /** | |
9327 | * devlink_trap_groups_unregister - Unregister packet trap groups from devlink. | |
9328 | * @devlink: devlink. | |
9329 | * @groups: Packet trap groups. | |
9330 | * @groups_count: Count of provided packet trap groups. | |
9331 | */ | |
9332 | void devlink_trap_groups_unregister(struct devlink *devlink, | |
9333 | const struct devlink_trap_group *groups, | |
9334 | size_t groups_count) | |
9335 | { | |
9336 | int i; | |
9337 | ||
9338 | mutex_lock(&devlink->lock); | |
9339 | for (i = groups_count - 1; i >= 0; i--) | |
9340 | devlink_trap_group_unregister(devlink, &groups[i]); | |
9341 | mutex_unlock(&devlink->lock); | |
9342 | } | |
9343 | EXPORT_SYMBOL_GPL(devlink_trap_groups_unregister); | |
9344 | ||
1e8c6619 IS |
9345 | static void |
9346 | devlink_trap_policer_notify(struct devlink *devlink, | |
9347 | const struct devlink_trap_policer_item *policer_item, | |
9348 | enum devlink_command cmd) | |
9349 | { | |
9350 | struct sk_buff *msg; | |
9351 | int err; | |
9352 | ||
9353 | WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_POLICER_NEW && | |
9354 | cmd != DEVLINK_CMD_TRAP_POLICER_DEL); | |
9355 | ||
9356 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); | |
9357 | if (!msg) | |
9358 | return; | |
9359 | ||
9360 | err = devlink_nl_trap_policer_fill(msg, devlink, policer_item, cmd, 0, | |
9361 | 0, 0); | |
9362 | if (err) { | |
9363 | nlmsg_free(msg); | |
9364 | return; | |
9365 | } | |
9366 | ||
9367 | genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), | |
9368 | msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL); | |
9369 | } | |
9370 | ||
9371 | static int | |
9372 | devlink_trap_policer_register(struct devlink *devlink, | |
9373 | const struct devlink_trap_policer *policer) | |
9374 | { | |
9375 | struct devlink_trap_policer_item *policer_item; | |
9376 | int err; | |
9377 | ||
9378 | if (devlink_trap_policer_item_lookup(devlink, policer->id)) | |
9379 | return -EEXIST; | |
9380 | ||
9381 | policer_item = kzalloc(sizeof(*policer_item), GFP_KERNEL); | |
9382 | if (!policer_item) | |
9383 | return -ENOMEM; | |
9384 | ||
9385 | policer_item->policer = policer; | |
9386 | policer_item->rate = policer->init_rate; | |
9387 | policer_item->burst = policer->init_burst; | |
9388 | ||
9389 | if (devlink->ops->trap_policer_init) { | |
9390 | err = devlink->ops->trap_policer_init(devlink, policer); | |
9391 | if (err) | |
9392 | goto err_policer_init; | |
9393 | } | |
9394 | ||
9395 | list_add_tail(&policer_item->list, &devlink->trap_policer_list); | |
9396 | devlink_trap_policer_notify(devlink, policer_item, | |
9397 | DEVLINK_CMD_TRAP_POLICER_NEW); | |
9398 | ||
9399 | return 0; | |
9400 | ||
9401 | err_policer_init: | |
9402 | kfree(policer_item); | |
9403 | return err; | |
9404 | } | |
9405 | ||
9406 | static void | |
9407 | devlink_trap_policer_unregister(struct devlink *devlink, | |
9408 | const struct devlink_trap_policer *policer) | |
9409 | { | |
9410 | struct devlink_trap_policer_item *policer_item; | |
9411 | ||
9412 | policer_item = devlink_trap_policer_item_lookup(devlink, policer->id); | |
9413 | if (WARN_ON_ONCE(!policer_item)) | |
9414 | return; | |
9415 | ||
9416 | devlink_trap_policer_notify(devlink, policer_item, | |
9417 | DEVLINK_CMD_TRAP_POLICER_DEL); | |
9418 | list_del(&policer_item->list); | |
9419 | if (devlink->ops->trap_policer_fini) | |
9420 | devlink->ops->trap_policer_fini(devlink, policer); | |
9421 | kfree(policer_item); | |
9422 | } | |
9423 | ||
9424 | /** | |
9425 | * devlink_trap_policers_register - Register packet trap policers with devlink. | |
9426 | * @devlink: devlink. | |
9427 | * @policers: Packet trap policers. | |
9428 | * @policers_count: Count of provided packet trap policers. | |
9429 | * | |
9430 | * Return: Non-zero value on failure. | |
9431 | */ | |
9432 | int | |
9433 | devlink_trap_policers_register(struct devlink *devlink, | |
9434 | const struct devlink_trap_policer *policers, | |
9435 | size_t policers_count) | |
9436 | { | |
9437 | int i, err; | |
9438 | ||
9439 | mutex_lock(&devlink->lock); | |
9440 | for (i = 0; i < policers_count; i++) { | |
9441 | const struct devlink_trap_policer *policer = &policers[i]; | |
9442 | ||
9443 | if (WARN_ON(policer->id == 0 || | |
9444 | policer->max_rate < policer->min_rate || | |
9445 | policer->max_burst < policer->min_burst)) { | |
9446 | err = -EINVAL; | |
9447 | goto err_trap_policer_verify; | |
9448 | } | |
9449 | ||
9450 | err = devlink_trap_policer_register(devlink, policer); | |
9451 | if (err) | |
9452 | goto err_trap_policer_register; | |
9453 | } | |
9454 | mutex_unlock(&devlink->lock); | |
9455 | ||
9456 | return 0; | |
9457 | ||
9458 | err_trap_policer_register: | |
9459 | err_trap_policer_verify: | |
9460 | for (i--; i >= 0; i--) | |
9461 | devlink_trap_policer_unregister(devlink, &policers[i]); | |
9462 | mutex_unlock(&devlink->lock); | |
9463 | return err; | |
9464 | } | |
9465 | EXPORT_SYMBOL_GPL(devlink_trap_policers_register); | |
9466 | ||
9467 | /** | |
9468 | * devlink_trap_policers_unregister - Unregister packet trap policers from devlink. | |
9469 | * @devlink: devlink. | |
9470 | * @policers: Packet trap policers. | |
9471 | * @policers_count: Count of provided packet trap policers. | |
9472 | */ | |
9473 | void | |
9474 | devlink_trap_policers_unregister(struct devlink *devlink, | |
9475 | const struct devlink_trap_policer *policers, | |
9476 | size_t policers_count) | |
9477 | { | |
9478 | int i; | |
9479 | ||
9480 | mutex_lock(&devlink->lock); | |
9481 | for (i = policers_count - 1; i >= 0; i--) | |
9482 | devlink_trap_policer_unregister(devlink, &policers[i]); | |
9483 | mutex_unlock(&devlink->lock); | |
9484 | } | |
9485 | EXPORT_SYMBOL_GPL(devlink_trap_policers_unregister); | |
9486 | ||
ddb6e99e JK |
9487 | static void __devlink_compat_running_version(struct devlink *devlink, |
9488 | char *buf, size_t len) | |
9489 | { | |
9490 | const struct nlattr *nlattr; | |
9491 | struct devlink_info_req req; | |
9492 | struct sk_buff *msg; | |
9493 | int rem, err; | |
9494 | ||
ddb6e99e JK |
9495 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
9496 | if (!msg) | |
9497 | return; | |
9498 | ||
9499 | req.msg = msg; | |
9500 | err = devlink->ops->info_get(devlink, &req, NULL); | |
9501 | if (err) | |
9502 | goto free_msg; | |
9503 | ||
9504 | nla_for_each_attr(nlattr, (void *)msg->data, msg->len, rem) { | |
9505 | const struct nlattr *kv; | |
9506 | int rem_kv; | |
9507 | ||
9508 | if (nla_type(nlattr) != DEVLINK_ATTR_INFO_VERSION_RUNNING) | |
9509 | continue; | |
9510 | ||
9511 | nla_for_each_nested(kv, nlattr, rem_kv) { | |
9512 | if (nla_type(kv) != DEVLINK_ATTR_INFO_VERSION_VALUE) | |
9513 | continue; | |
9514 | ||
9515 | strlcat(buf, nla_data(kv), len); | |
9516 | strlcat(buf, " ", len); | |
9517 | } | |
9518 | } | |
9519 | free_msg: | |
9520 | nlmsg_free(msg); | |
9521 | } | |
9522 | ||
9523 | void devlink_compat_running_version(struct net_device *dev, | |
9524 | char *buf, size_t len) | |
9525 | { | |
ddb6e99e JK |
9526 | struct devlink *devlink; |
9527 | ||
1b45ff6c JK |
9528 | dev_hold(dev); |
9529 | rtnl_unlock(); | |
9530 | ||
b473b0d2 | 9531 | devlink = netdev_to_devlink(dev); |
be6fe1d8 | 9532 | if (!devlink || !devlink->ops->info_get) |
e0dcd386 | 9533 | goto out; |
b473b0d2 JK |
9534 | |
9535 | mutex_lock(&devlink->lock); | |
9536 | __devlink_compat_running_version(devlink, buf, len); | |
9537 | mutex_unlock(&devlink->lock); | |
1b45ff6c | 9538 | |
e0dcd386 | 9539 | out: |
1b45ff6c JK |
9540 | rtnl_lock(); |
9541 | dev_put(dev); | |
ddb6e99e JK |
9542 | } |
9543 | ||
4eceba17 JK |
9544 | int devlink_compat_flash_update(struct net_device *dev, const char *file_name) |
9545 | { | |
4eceba17 | 9546 | struct devlink *devlink; |
e0dcd386 | 9547 | int ret; |
4eceba17 | 9548 | |
1b45ff6c JK |
9549 | dev_hold(dev); |
9550 | rtnl_unlock(); | |
9551 | ||
b473b0d2 | 9552 | devlink = netdev_to_devlink(dev); |
e0dcd386 JP |
9553 | if (!devlink || !devlink->ops->flash_update) { |
9554 | ret = -EOPNOTSUPP; | |
9555 | goto out; | |
9556 | } | |
4eceba17 | 9557 | |
b473b0d2 JK |
9558 | mutex_lock(&devlink->lock); |
9559 | ret = devlink->ops->flash_update(devlink, file_name, NULL, NULL); | |
9560 | mutex_unlock(&devlink->lock); | |
1b45ff6c | 9561 | |
e0dcd386 | 9562 | out: |
1b45ff6c JK |
9563 | rtnl_lock(); |
9564 | dev_put(dev); | |
9565 | ||
b473b0d2 | 9566 | return ret; |
4eceba17 JK |
9567 | } |
9568 | ||
af3836df JP |
9569 | int devlink_compat_phys_port_name_get(struct net_device *dev, |
9570 | char *name, size_t len) | |
9571 | { | |
9572 | struct devlink_port *devlink_port; | |
9573 | ||
9574 | /* RTNL mutex is held here which ensures that devlink_port | |
9575 | * instance cannot disappear in the middle. No need to take | |
9576 | * any devlink lock as only permanent values are accessed. | |
9577 | */ | |
9578 | ASSERT_RTNL(); | |
9579 | ||
9580 | devlink_port = netdev_to_devlink_port(dev); | |
9581 | if (!devlink_port) | |
9582 | return -EOPNOTSUPP; | |
9583 | ||
9584 | return __devlink_port_phys_port_name_get(devlink_port, name, len); | |
9585 | } | |
9586 | ||
7e1146e8 JP |
9587 | int devlink_compat_switch_id_get(struct net_device *dev, |
9588 | struct netdev_phys_item_id *ppid) | |
9589 | { | |
9590 | struct devlink_port *devlink_port; | |
9591 | ||
043b8413 VB |
9592 | /* Caller must hold RTNL mutex or reference to dev, which ensures that |
9593 | * devlink_port instance cannot disappear in the middle. No need to take | |
7e1146e8 JP |
9594 | * any devlink lock as only permanent values are accessed. |
9595 | */ | |
7e1146e8 | 9596 | devlink_port = netdev_to_devlink_port(dev); |
46737a19 | 9597 | if (!devlink_port || !devlink_port->switch_port) |
7e1146e8 JP |
9598 | return -EOPNOTSUPP; |
9599 | ||
9600 | memcpy(ppid, &devlink_port->attrs.switch_id, sizeof(*ppid)); | |
9601 | ||
9602 | return 0; | |
9603 | } | |
9604 | ||
070c63f2 JP |
9605 | static void __net_exit devlink_pernet_pre_exit(struct net *net) |
9606 | { | |
9607 | struct devlink *devlink; | |
9608 | int err; | |
9609 | ||
9610 | /* In case network namespace is getting destroyed, reload | |
9611 | * all devlink instances from this namespace into init_net. | |
9612 | */ | |
9613 | mutex_lock(&devlink_mutex); | |
9614 | list_for_each_entry(devlink, &devlink_list, list) { | |
9615 | if (net_eq(devlink_net(devlink), net)) { | |
9616 | if (WARN_ON(!devlink_reload_supported(devlink))) | |
9617 | continue; | |
9618 | err = devlink_reload(devlink, &init_net, NULL); | |
a0c76345 | 9619 | if (err && err != -EOPNOTSUPP) |
070c63f2 JP |
9620 | pr_warn("Failed to reload devlink instance into init_net\n"); |
9621 | } | |
9622 | } | |
9623 | mutex_unlock(&devlink_mutex); | |
9624 | } | |
9625 | ||
9626 | static struct pernet_operations devlink_pernet_ops __net_initdata = { | |
9627 | .pre_exit = devlink_pernet_pre_exit, | |
9628 | }; | |
9629 | ||
f4b6bcc7 | 9630 | static int __init devlink_init(void) |
bfcd3a46 | 9631 | { |
070c63f2 JP |
9632 | int err; |
9633 | ||
9634 | err = genl_register_family(&devlink_nl_family); | |
9635 | if (err) | |
9636 | goto out; | |
9637 | err = register_pernet_subsys(&devlink_pernet_ops); | |
9638 | ||
9639 | out: | |
9640 | WARN_ON(err); | |
9641 | return err; | |
bfcd3a46 JP |
9642 | } |
9643 | ||
f4b6bcc7 | 9644 | subsys_initcall(devlink_init); |